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6825-20-3

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6825-20-3 Usage

Description

3,6-Dibromocarbazole is an organic compound characterized by the presence of two bromine atoms attached to a carbazole core. It is known for its unique chemical properties and potential applications in various fields.

Uses

Used in Pharmaceutical Industry:
3,6-Dibromocarbazole is used as a pharmaceutical intermediate for the synthesis of various drugs and pharmaceutical compounds. Its unique structure and reactivity make it a valuable component in the development of new medications.
Used in Optoelectronic Industry:
3,6-Dibromocarbazole is also an important intermediate in the synthesis of optoelectronic materials. Its properties make it suitable for use in the development of advanced materials for electronic devices, such as solar cells and light-emitting diodes.
Used in Chemical Synthesis:
3,6-Dibromocarbazole has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole, a compound with potential applications in various chemical processes and industries. Its versatility and reactivity make it a valuable building block for the synthesis of new and innovative materials.

Synthesis

3, 6-dibromocarbazole is synthesized with three methods, such as N-bromosuccinimide method, liquid bromine method and silica gel method. But now main method for synthesis is silica gel method. The main raw materials used in the synthesis include carbazole, N-bromosuccinimide, solvent methylene chloride, catalyst silica gel, and the yield could reach 89.5%.

Check Digit Verification of cas no

The CAS Registry Mumber 6825-20-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,2 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6825-20:
(6*6)+(5*8)+(4*2)+(3*5)+(2*2)+(1*0)=103
103 % 10 = 3
So 6825-20-3 is a valid CAS Registry Number.
InChI:InChI=1/C12H7Br2N/c13-7-1-3-11-9(5-7)10-6-8(14)2-4-12(10)15-11/h1-6,15H

6825-20-3 Well-known Company Product Price

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  • TCI America

  • (D2983)  3,6-Dibromocarbazole  >98.0%(GC)

  • 6825-20-3

  • 1g

  • 245.00CNY

  • Detail
  • TCI America

  • (D2983)  3,6-Dibromocarbazole  >98.0%(GC)

  • 6825-20-3

  • 5g

  • 680.00CNY

  • Detail
  • TCI America

  • (D2983)  3,6-Dibromocarbazole  >98.0%(GC)

  • 6825-20-3

  • 25g

  • 1,890.00CNY

  • Detail
  • Alfa Aesar

  • (H56360)  3,6-Dibromocarbazole, 99%   

  • 6825-20-3

  • 5g

  • 1054.0CNY

  • Detail
  • Alfa Aesar

  • (H56360)  3,6-Dibromocarbazole, 99%   

  • 6825-20-3

  • 25g

  • 2941.0CNY

  • Detail
  • Aldrich

  • (259004)  3,6-Dibromocarbazole  97%

  • 6825-20-3

  • 259004-5G

  • 1,090.44CNY

  • Detail

6825-20-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 3,6-Dibromocarbazole

1.2 Other means of identification

Product number -
Other names 3,6-dibromo-9H-carbazole

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:6825-20-3 SDS

6825-20-3Synthetic route

9H-carbazole
86-74-8

9H-carbazole

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
With N-Bromosuccinimide In tetrahydrofuran at 85℃; for 48h;98%
With N-Bromosuccinimide In dichloromethane; N,N-dimethyl-formamide at 20℃;97%
With 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione In ethanol at 20 - 25℃; for 2h;96%
9H-carbazole
86-74-8

9H-carbazole

A

3-bromo-9H-carbazole
1592-95-6

3-bromo-9H-carbazole

B

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
With N-Bromosuccinimide In N,N-dimethyl-formamide at 0 - 20℃; for 24h;A 47%
B n/a
With N-Bromosuccinimide; silica gel In dichloromethane at 18℃; for 0.33h; Product distribution; one to four equivalents of NBS, other times; other N-heterocycles;
With tetra-N-butylammonium tribromide In chloroform for 0.5h; Product distribution; Ambient temperature; other reaction times, different substrate/reagent ratios;A 62 % Chromat.
B 17 % Chromat.
diphenylamine
122-39-4

diphenylamine

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
With bromine In diethyl ether85%
With N-Bromosuccinimide In dichloromethane for 1h; Irradiation;84.6%
9H-carbazole
86-74-8

9H-carbazole

A

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

B

1,3,6-tribromo-9H-carbazole
55119-10-3

1,3,6-tribromo-9H-carbazole

C

1,3,6,8-tetrabromo-9-methyl-9H-carbazole
55119-09-0

1,3,6,8-tetrabromo-9-methyl-9H-carbazole

Conditions
ConditionsYield
With N-Bromosuccinimide; silica gel In dichloromethane at 18℃; for 72h; Yield given. Yields of byproduct given;
4,4'-dibromodiphenylnitrosamine
5149-12-2

4,4'-dibromodiphenylnitrosamine

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 58 percent / acetic acid; zinc; HCl / tetrahydrofuran; ethanol; H2O / 0.5 h
2: 81 percent / ethanol / 1 h / 70 °C
3: NaCl / acetonitrile / Photolysis
View Scheme
bis(4-bromophenyl)amine
16292-17-4

bis(4-bromophenyl)amine

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 9.0 g / NaNO2; HCl / H2O; ethanol / 0.92 h
2: 58 percent / acetic acid; zinc; HCl / tetrahydrofuran; ethanol; H2O / 0.5 h
3: 81 percent / ethanol / 1 h / 70 °C
4: NaCl / acetonitrile / Photolysis
View Scheme
N,N-diphenylbenzamide
4051-56-3

N,N-diphenylbenzamide

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: Br2 / CH2Cl2 / 8 h / Heating
2: 23.44 g / KOH / ethanol; H2O / 1.5 h / Heating
3: 9.0 g / NaNO2; HCl / H2O; ethanol / 0.92 h
4: 58 percent / acetic acid; zinc; HCl / tetrahydrofuran; ethanol; H2O / 0.5 h
5: 81 percent / ethanol / 1 h / 70 °C
6: NaCl / acetonitrile / Photolysis
View Scheme
N,N-bis-(4-bromophenyl)benzamide
99234-92-1

N,N-bis-(4-bromophenyl)benzamide

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 23.44 g / KOH / ethanol; H2O / 1.5 h / Heating
2: 9.0 g / NaNO2; HCl / H2O; ethanol / 0.92 h
3: 58 percent / acetic acid; zinc; HCl / tetrahydrofuran; ethanol; H2O / 0.5 h
4: 81 percent / ethanol / 1 h / 70 °C
5: NaCl / acetonitrile / Photolysis
View Scheme
1,1-bis(4-bromophenyl)hydrazine
5149-08-6

1,1-bis(4-bromophenyl)hydrazine

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 81 percent / ethanol / 1 h / 70 °C
2: NaCl / acetonitrile / Photolysis
View Scheme
N-(4,4′-dibromodiphenylamino)-2,4,6-trimethylpyridinium tetrafluoroborate

N-(4,4′-dibromodiphenylamino)-2,4,6-trimethylpyridinium tetrafluoroborate

A

4-bromo-N-(4-bromophenyl)-2-chloroaniline

4-bromo-N-(4-bromophenyl)-2-chloroaniline

B

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

C

bis(4-bromophenyl)amine
16292-17-4

bis(4-bromophenyl)amine

Conditions
ConditionsYield
With sodium chloride In acetonitrile Photolysis;A 6.8 mg
B n/a
C n/a
9-benzoyl-3,6-dibromo-carbazole
912850-81-8

9-benzoyl-3,6-dibromo-carbazole

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
With potassium hydroxide
1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione
77-48-5

1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione

9H-carbazole
86-74-8

9H-carbazole

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Conditions
ConditionsYield
With tetrachloromethane
bromine
7726-95-6

bromine

acetic anhydride
108-24-7

acetic anhydride

9H-carbazole
86-74-8

9H-carbazole

acetic acid
64-19-7

acetic acid

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

N-nitroso-3,6-dibromocarbazole
228091-77-8

N-nitroso-3,6-dibromocarbazole

acetone
67-64-1

acetone

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

hydrogenchloride
7647-01-0

hydrogenchloride

N-nitroso-3,6-dibromocarbazole
228091-77-8

N-nitroso-3,6-dibromocarbazole

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

1-bromo-octane
111-83-1

1-bromo-octane

3,6-dibromo-9-octyl-9H-carbazole
79554-93-1

3,6-dibromo-9-octyl-9H-carbazole

Conditions
ConditionsYield
With tetrabutylammomium bromide; sodium hydroxide In toluene at 120℃;100%
With tetrabutylammomium bromide; potassium hydroxide In acetone for 6h; Reflux;95%
With tetrabutylammomium bromide; potassium hydroxide In water; toluene for 24h; Heating;95%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

4-Fluoronitrobenzene
350-46-9

4-Fluoronitrobenzene

3,6-dibromo-9-(4-nitrophenyl)-9H-carbazole
255829-24-4

3,6-dibromo-9-(4-nitrophenyl)-9H-carbazole

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide100%
With potassium carbonate In N,N-dimethyl-formamide for 12h; Reflux;81%
With potassium tert-butylate In N,N-dimethyl-formamide at 110℃; for 24h; Inert atmosphere;80%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

(R)-glycidyl nosylate
115314-14-2, 115314-17-5

(R)-glycidyl nosylate

(-)-(S)-3,6-dibromo-9-(oxiran-2-ylmethyl)-9H-carbazole
1260172-41-5

(-)-(S)-3,6-dibromo-9-(oxiran-2-ylmethyl)-9H-carbazole

Conditions
ConditionsYield
With potassium hydroxide In N,N-dimethyl-formamide at 20℃; Cooling with ice; Inert atmosphere;100%
With potassium hydroxide In N,N-dimethyl-formamide at 20℃; Cooling with ice;
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

iodomethane-d3
865-50-9

iodomethane-d3

C13H6(2)H3Br2N

C13H6(2)H3Br2N

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 3h;100%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

copper(I) cyanide
544-92-3

copper(I) cyanide

9H-carbazole-3,6-dicarbonitrile
57103-03-4

9H-carbazole-3,6-dicarbonitrile

Conditions
ConditionsYield
In N,N-dimethyl-formamide for 70h; Heating;99%
1-bromo-butane
109-65-9

1-bromo-butane

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

3,6-dibromo-(N-n-butyl)carbazole
121602-03-7

3,6-dibromo-(N-n-butyl)carbazole

Conditions
ConditionsYield
Stage #1: 3,6-dibromo-9H-carbazole With sodium hydroxide In acetone at 60℃; for 0.5h; Inert atmosphere;
Stage #2: 1-bromo-butane In acetone Reflux; Inert atmosphere;
99%
With tetrabutylammomium bromide; potassium hydroxide In water; toluene for 5h; Reflux;82%
With sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride In toluene at 100℃; for 2h; Alkylation;75%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

benzyl alcohol
100-51-6

benzyl alcohol

3,6-dibromo-9-benzyl-9H-carbazole
118599-27-2

3,6-dibromo-9-benzyl-9H-carbazole

Conditions
ConditionsYield
With (trimethyl-λ5-phosphanyliden)acetonitrile In toluene at 110℃; for 15h;97%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

4-methoxyphenylboronic acid
5720-07-0

4-methoxyphenylboronic acid

3,6-bis(4-methoxyphenyl)-9H-carbazole
399042-83-2

3,6-bis(4-methoxyphenyl)-9H-carbazole

Conditions
ConditionsYield
With sodium hydrogencarbonate; tetrakis(triphenylphosphine) palladium(0) In ethanol; toluene for 5h; Heating;97%
With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; palladium diacetate; potassium carbonate In ethanol; water; toluene at 80℃; Inert atmosphere;82%
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; water; toluene at 80℃; for 12h; Inert atmosphere;64%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

ethyl bromoacetate
105-36-2

ethyl bromoacetate

3,6-dibromo-carbazole-9-acetic acid ethyl ester
124985-06-4

3,6-dibromo-carbazole-9-acetic acid ethyl ester

Conditions
ConditionsYield
Stage #1: 3,6-dibromo-9H-carbazole With potassium carbonate In N,N-dimethyl-formamide at 55℃; for 2h;
Stage #2: ethyl bromoacetate In N,N-dimethyl-formamide at 20 - 55℃; for 3h;
97%
With potassium carbonate In N,N-dimethyl-formamide at 55℃;84%
Stage #1: 3,6-dibromo-9H-carbazole With tetrabutylammomium bromide; potassium carbonate In N,N-dimethyl-formamide at 50℃; for 0.5h;
Stage #2: ethyl bromoacetate In N,N-dimethyl-formamide at 90℃; for 12h;
84%
zinc(II) cyanide
557-21-1

zinc(II) cyanide

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

9H-carbazole-3,6-dicarbonitrile
57103-03-4

9H-carbazole-3,6-dicarbonitrile

Conditions
ConditionsYield
Stage #1: 3,6-dibromo-9H-carbazole With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride In water; N,N-dimethyl-formamide for 0.75h; Inert atmosphere;
Stage #2: zinc(II) cyanide With tris(dibenzylideneacetone)dipalladium(0) chloroform complex; zinc diacetate; zinc In water; N,N-dimethyl-formamide at 100℃; for 20h; Inert atmosphere;
97%
With 1,1'-bis-(diphenylphosphino)ferrocene; tris-(dibenzylideneacetone)dipalladium(0); zinc(II) acetate dihydrate; zinc In water; N,N-dimethyl-formamide at 110 - 120℃; for 48h; Negishi Coupling; Inert atmosphere;81%
1-ethenyl-4-methylbenzene
622-97-9

1-ethenyl-4-methylbenzene

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

C21H17Br2N

C21H17Br2N

Conditions
ConditionsYield
Stage #1: 3,6-dibromo-9H-carbazole With iron(III) trifluoromethanesulfonate; cyclomaltooctaose In 1,2-dichloro-ethane at 40℃; for 0.0833333h; Green chemistry;
Stage #2: 1-ethenyl-4-methylbenzene In 1,2-dichloro-ethane at 40℃; Green chemistry;
97%
2-ethylhexyl bromide
18908-66-2

2-ethylhexyl bromide

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

3,6-dibromo-9-(2-ethyl-hexyl)-9H-carbazole
173063-52-0

3,6-dibromo-9-(2-ethyl-hexyl)-9H-carbazole

Conditions
ConditionsYield
Stage #1: 3,6-dibromo-9H-carbazole With potassium tert-butylate In tetrahydrofuran at 20℃; Inert atmosphere; Schlenk technique;
Stage #2: 3-bromomethylheptane In tetrahydrofuran Reflux; Inert atmosphere; Schlenk technique;
96.2%
With tetrabutylammomium bromide; potassium hydroxide In water; toluene at 110℃; for 4h;80%
Stage #1: 3,6-dibromo-9H-carbazole With tetrabutylammomium bromide; potassium hydroxide In toluene for 1h;
Stage #2: 3-bromomethylheptane In toluene at 20℃; for 24h; Reflux;
77%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

μ,η-hexacarbonyldicobaltopropynol

μ,η-hexacarbonyldicobaltopropynol

1-(3',6'-dibromocarbazolyl)-2-propyne
105729-54-2

1-(3',6'-dibromocarbazolyl)-2-propyne

Conditions
ConditionsYield
Stage #1: 3,6-dibromo-9H-carbazole; μ,η-hexacarbonyldicobaltopropynol With boron trifluoride diethyl etherate In dichloromethane at 20℃; for 0.5h;
Stage #2: With ferric nitrate In ethanol at 50℃;
96%
phenanthridine
229-87-8

phenanthridine

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C31H22Br2N2O4
1357456-46-2

C31H22Br2N2O4

Conditions
ConditionsYield
With water at 70℃; for 10h;96%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

diphenylamine
122-39-4

diphenylamine

N3,N3,N6,N6-tetraphenyl-9H-carbazole-3,6-diamine
608527-58-8

N3,N3,N6,N6-tetraphenyl-9H-carbazole-3,6-diamine

Conditions
ConditionsYield
With tris(dibenzylideneacetone)dipalladium(0) chloroform complex; lithium hexamethyldisilazane; tri tert-butylphosphoniumtetrafluoroborate In tetrahydrofuran at 65℃; for 10h; Inert atmosphere;96%
With tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine; sodium t-butanolate In toluene for 12h; Reflux;70%
With tris-(dibenzylideneacetone)dipalladium(0); tri-tert-butyl phosphine; sodium t-butanolate In toluene at 110℃; for 24h; Inert atmosphere;
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

1,2,4,5-tetrabromomethylbenzene
15442-91-8

1,2,4,5-tetrabromomethylbenzene

9,9',9'',9'''-[benzene-1,2,4,5-tetrayltetrakis(methylene)]tetrakis(3,6-dibromo-9H-carbazole)

9,9',9'',9'''-[benzene-1,2,4,5-tetrayltetrakis(methylene)]tetrakis(3,6-dibromo-9H-carbazole)

Conditions
ConditionsYield
With potassium hydroxide In tetrahydrofuran at 20℃;95.9%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

1-bromo-hexane
111-25-1

1-bromo-hexane

3,6-dibromo-9-hexyl-9H-carbazole
150623-72-6

3,6-dibromo-9-hexyl-9H-carbazole

Conditions
ConditionsYield
With tetrabutylammomium bromide; potassium hydroxide In water at 20℃; for 0.5h;95%
Stage #1: 3,6-dibromo-9H-carbazole With potassium hydroxide In dimethyl sulfoxide at 20℃; for 1h;
Stage #2: 1-bromo-hexane In dimethyl sulfoxide at 20℃; for 10h;
92.35%
Stage #1: 3,6-dibromo-9H-carbazole With potassium hydroxide In dimethyl sulfoxide at 20℃; for 1h;
Stage #2: 1-bromo-hexane In dimethyl sulfoxide at 20℃;
92.35%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

4-(diphenylamino)phenyl boronic acid
201802-67-7

4-(diphenylamino)phenyl boronic acid

4,4'-(9H-carbazole-3,6-diyl)bis(N,N-diphenylaniline)
885665-26-9

4,4'-(9H-carbazole-3,6-diyl)bis(N,N-diphenylaniline)

Conditions
ConditionsYield
With potassium carbonate; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran Inert atmosphere; Reflux;95%
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In tetrahydrofuran; water Suzuki Coupling;69%
With palladium diacetate; potassium carbonate; tris-(o-tolyl)phosphine In ethanol; water; toluene for 4h; Reflux;68%
With potassium carbonate; palladium diacetate; tris-(o-tolyl)phosphine In ethanol; water; toluene at 80℃; for 3h; Suzuki-Miyaura Coupling;51%
With tetrakis(triphenylphosphine) palladium(0); potassium carbonate In methanol; water; toluene for 24h; Suzuki reaction; Reflux;
phenanthridine
229-87-8

phenanthridine

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

acetylenedicarboxylic acid diethyl ester
762-21-0

acetylenedicarboxylic acid diethyl ester

diethyl 2-(6-(3,6-diboromo-9H-carbazole-9-yl)phenanthridine-5(6H)-yl)fumarate

diethyl 2-(6-(3,6-diboromo-9H-carbazole-9-yl)phenanthridine-5(6H)-yl)fumarate

Conditions
ConditionsYield
In dichloromethane at -10 - 20℃;95%
3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

Di-tert-butyl acetylenedicarboxylate
66086-33-7

Di-tert-butyl acetylenedicarboxylate

triphenylphosphine
603-35-0

triphenylphosphine

di-tert-buthyl 2-(3,6-dibromocarbazole-9-yl)-3-(triphenylphosphoranylidene)-butanedioate
1190703-81-1

di-tert-buthyl 2-(3,6-dibromocarbazole-9-yl)-3-(triphenylphosphoranylidene)-butanedioate

Conditions
ConditionsYield
In acetone at 20℃; for 8h; Kinetics; Solvent; Temperature; Concentration;95%
isoquinoline
119-65-3

isoquinoline

3,6-dibromo-9H-carbazole
6825-20-3

3,6-dibromo-9H-carbazole

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C27H20Br2N2O4
1253914-46-3

C27H20Br2N2O4

Conditions
ConditionsYield
In dichloromethane at -10 - 20℃;95%

6825-20-3Relevant articles and documents

Synthesis and luminescent properties of novel organic luminescent materials based on carbazole derivatives

Duan, Yingxiang,Yang, Yanhua,Cen, Bo,Shen, Kecheng,Tao, Xian,Shen, Yingzhong

, p. 2955 - 2963 (2018)

Four novel host materials C1–C4 based on carbazole derivatives have been designed, synthesized, characterized, and applied as organic light-emitting devices. This report presents a novel approach, which combines carbazole and aromatic hydrocarbons through methylene. The formed molecules exhibited twisted structures, which resulted in high glass transition temperatures (Tg), ranged from 90.4 to 148.0?°C. They also had high optical bandgaps (Eg), their optical energy bandgaps are determined by absorption edge technique as 3.22 to 3.50?eV, evaluated photo-physical properties of these synthesized novel chromophores, the optical properties such as maximum absorption and emission wavelengths (λ, nm), molar extinction coefficients (ε, cm? 1 M? 1), Stoke’s shifts (ΔλST, nm), and quantum yields (φF) also studied the effect of solvent polarity on absorption and emission of these carbazole derivatives, and these compounds exhibited intense absorption bonds between 250 and 325?nm, which are attributed to the π–π* transition of the carbazole-centered units. In addition, they showed blue fluorescence in different solvents. These compounds showed bathochromic shift with the increase in the solvent polarity.

Synthesis and characterization of two carbazole-based alternating copolymers with 4-nitrophenylcyanovinylene pendant groups and their use as electron donors for bulk heterojunction solar cells

Sharma,Singh, Manjeet,Kurchania, Rajnish,Koukaras,Mikroyannidis

, p. 18821 - 18834 (2013)

Two new carbazole-based copolymers PT and PP carrying thienyl or phenyl, respectively, alternating segments and 4-nitrophenylcyanovinylene pendant groups attached to the carbazole nitrogen were synthesized and characterized. Their optical and electrochemical properties were investigated. Both copolymers showed broad absorption bands in the longer wavelength region, which is complementary to those of PC61BM and PC71BM acceptors, and showed optical band gaps about 1.64 eV and 1.69 eV for PT and PP, respectively. The deep lying HOMO energy level benefited a high open circuit voltage (V oc), leading to an overall power conversion efficiency (PCE) of 2.19%, 2.98% 2.02% and 2.54% for bulk heterojunction (BHJ) solar cells based on PT:PC61BM, PT:PC71BM, PP:PC61BM and PP:PC 71BM blends, respectively, processed from tetrahydrofuran (THF) solvent. The BHJ solar cells based on PT:PC71BM and PP:PC 71BM blends processed from THF and 1-chloronaphthalene (CN) mixed solvents showed overall PCE of about 5.39% and 4.20%, respectively. The increase in the overall PCE for the BHJ devices based on solvent additives was attributed to the balanced charge transport in the devices. The Royal Society of Chemistry 2013.

Organic dyes containing fused acenes as building blocks: Optical, electrochemical and photovoltaic properties

Gao, Peng,Tsao, Hoi Nok,Teuscher, Joel,Gr?tzel, Michael

, p. 289 - 292 (2018)

Two D-π-A dyes based on fused acenes (carbazole, cyclopenta[2,1-b:3,4-b’]dithiophene (CPDT) and dithieno[3,2-b:2’,3’-d]pyrrole (DTP)) were synthesized, characterized using UV-vis absorption spectroscopy and electrochemistry, density function theory (DFT) calculations, and used as sensitizers in dye-sensitized solar cells (DSSCs). The two sensitizers were compared thoroughly over physicochemical properties and DSSC performance. Although the DTP dye has slightly blue-shifted and weaker incident photon-to-collected electron (IPCE) conversion efficiency responses, the much increased open-circuit photovoltage values and improved charge-transfer kinetics relative to the CPDT systems result in superior power conversion efficiencies. This work reveals the potential of DTP as a bridge in the design of sensitizers.

Hydrogen-Bonded Crystalline Molecular Machines with Ultrafast Rotation and Displacive Phase Transitions

Colin-Molina, Abraham,Jellen, Marcus J.,Rodríguez-Hernández, Joelis,Cifuentes-Quintal, Miguel Eduardo,Barroso, Jorge,Toscano, Rubén A.,Merino, Gabriel,Rodríguez-Molina, Braulio

, p. 11727 - 11733 (2020)

Two new crystalline rotors 1 and 2 assembled through N?H???N hydrogen bonds by using halogenated carbazole as stators and 1,4-diaza[2.2.2]bicyclooctane (DABCO) as the rotator, are described. The dynamic characterization through 1H T1 relaxometry experiments indicate very low rotational activation barriers (Ea) of 0.67 kcal mol?1 for 1 and 0.26 kcal mol?1 for 2, indicating that DABCO can reach a THz frequency at room temperature in the latter. These Ea values are supported by solid-state density functional theory computations. Interestingly, both supramolecular rotors show a phase transition between 298 and 250 K, revealed by differential scanning calorimetry and single-crystal X-ray diffraction. The subtle changes in the crystalline environment of these rotors that can alter the motion of an almost barrierless DABCO are discussed here.

Synthesis and characterization of yellow and green light emitting novel polymers containing carbazole and electroactive moieties

Aydin, Aysel,Kaya, Ismet

, p. 104 - 114 (2012)

The compounds 1,5-bis(3,6-di(thiophen-3-yl)-9H-carbazol-9-yl)pentane (B1) and 1,2-bis(2-(3,6-di(thiophen-3-yl)-9H-carbazol-9-yl)ethoxy)ethane (B2) were synthesized via Ullmann and Suzuki couplings. Additionally, the homopolymers and copolymers of these compounds with 3,4-ethylenedioxythiophene (EDOT) and thiophene (Th) were synthesized and coated onto an ITO-glass surface via electrochemical oxidative polymerization. The spectroelectrochemical and electrochromic properties of these compounds were also investigated. The switching ability of these polymers was measured as the percent transmittance (%T) at their point of maximum contrast. The solid state electrical conductivities of the polymeric films coated onto the ITO-glass surface were measured via the four point probe technique using an electrometer. The compounds were characterized by FT-IR and NMR, and their thermal stabilities were determined via TG measurements. Fluorescence measurements were performed using DMSO solutions, and the synthesized polymers emitted both green and yellow colors based on the tuning of the excitation wavelength, which indicates that these polymers could be used to produce new polymeric light emitting diodes (PLEDs) with green and yellow emissions.

Synthesis and characterization of 1,3,5-triphenylamine derivatives with star-shaped architecture

Brzeczek, Alina,Karon, Krzysztof,Higginbotham, Heather,J?drysiak, Rafa? G.,Lapkowski, Mieczyslaw,Walczak, Krzysztof,Golba, Sylwia

, p. 25 - 32 (2016)

In this work we report the synthesis, electrochemical and optical properties of five new, star shaped compounds containing both carbazole and triphenylamine moieties, further endcapped with thiophene or 3,4-ethylenedioxythiophene units. Electrochemical, UV-visible spectroscopy and fluorescence methods were employed to study the properties of these compounds as well as their electropolymers. The basic characteristics such as the band gaps, HOMO and LUMO values, absorption and emission maximum wavelengths of the monomers and the polymers are reported and discussed.

A fluorescent lanthanide-organic framework for highly sensitive detection of nitroaromatic explosives

Mu, Yajuan,Ran, Yungen,Du, Jianlong,Wu, Xueyi,Nie, Weiwei,Zhang, Jianhong,Zhao, Ying,Liu, Huan

, p. 125 - 130 (2017)

A lanthanide-organic framework constructed from a new π-electron rich ligand 5,5′-(9H-carbazole-3,6-diyl)diisophthalic acid (H4L) and Tb(NO3)3·6H2O, namely, [(CH3)2NH2][TbL] (1), has been synthesized under solvothermal condition. X-ray diffraction analysis reveals that complex 1 exhibits a 3D porous framework featuring a (4,8)-connected sqc net. The solid sample of 1 exhibits strong green fluorescence in the visible region upon excitation at 354?nm. The fine grinding particles of 1 dispersed in ethanol shows good sensitivity for picric acid (PA), which can be reused at least five times for detecting PA. The good sensitivity and recyclability of 1 make it a potential fluorescent sensor for explosives detection.

Architectural design of new conjugated systems carrying donor-π-acceptor groups (carbazole-CF3): Characterizations, optical, photophysical properties and DSSC's applications

Caglar, Mujdat,Caglar, Yasemin,Derince, Betul,Gorgun, Kamuran

, (2021/10/27)

In this study, two new organic dyes containing substituted N-octyl carbazole as electron donor and -CF3 units as electron acceptor group were designed and synthesized for ZnO-based dye sensitized solar cells (DSSCs). The synthesized carbazole derivatized compounds 3,6-bis(3,5-bis(trifluoromethyl)phenyl)-9-octyl-9H-carbazole (IVa) and 3,6-bis(4-(trifluoromethyl)phenyl)-9-octyl-9H-carbazole (IVb) were characterized by FT-IR, 1H NMR, 13C NMR, HMBC and CHN analyses. The spectroscopic (UV–Vis and FL) and thermal properties (TGA-DTA) of these compounds were also investigated. The produced (IVa and IVb) ZnO films were used as photoanodes in all DSSCs. Microwave-assisted hydrothermal method was used to synthesize ZnO nanopowders with different morphologies which are used as photoanodes in DSSCs. The structural and morphological properties of ZnO nanopowders were investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). ZnO-DSSCs were produced through coating ZnO nanopowders on transparent conductive fluorine-doped tin oxide (FTO) coated glass substrate using the Doctor Blade method. Current-voltage measurements of all produced DSSCs were carried out under a solar simulator with AM 1.5 G filter having an irradiance of 100 mW/cm2. Solar cell performances of all DSSCs such as; open-circuit voltage (Voc), short circuit current (Jsc), fill factor (FF) and power conversion efficiency (PCE) were analyzed.

A Family of Superhelicenes: Easily Tunable, Chiral Nanographenes by Merging Helicity with Planar π Systems

Amsharov, Konstantin Y.,B?nisch, Simon,G?rling, Andreas,Guldi, Dirk M.,Haines, Philipp,Hampel, Frank,Jelfs, Kim E.,Jux, Norbert,Nelson, Jenny,Reger, David,Schmidt, Julia A.,Ullrich, Tobias

supporting information, p. 18073 - 18081 (2021/07/16)

We designed a straightforward synthetic route towards a full-fledged family of π-extended helicenes: superhelicenes. They have two hexa-peri-hexabenzocoronenes (HBCs) in common that are connected via a central five-membered ring. By means of structurally altering this 5-membered ring, we realized a versatile library of molecular building blocks. Not only the superhelicene structure, but also their features are tuned with ease. In-depth physico-chemical characterizations served as a proof of concept thereof. The superhelicene enantiomers were separated, their circular dichroism was measured in preliminary studies and concluded with an enantiomeric assignment. Our work was rounded-off by crystal structure analyses. Mixed stacks of M- and P-isomers led to twisted molecular wires. Using such stacks, charge-carrier mobilities were calculated, giving reason to expect outstanding hole transporting properties.

Pyridazine–carbazole based fluorescent probes for volatile acid detection

Han, Won-Sik,Kim, Seung-Hwan,Lee, Sohee,Lee, Sunhee,Lee, Yeeun,Lee, Yong Sup,Wang, Kang-Kyun,Yang, Kwang-Hwan

, (2021/07/06)

Stimuli-responsive materials based on donor–acceptor systems have great potential for sensing applications, including in the solid state. Herein, two push–pull-type molecules, 3,6-di(9H-carbazol-9-yl)pyridazine (CzPyr–H) and 3,6-bis(3,6-dimethoxy-9H-carbazol-9-yl)pyridazine (CzPyr–OMe), each of which contain two carbazole donors and a pyridazine acceptor, were designed and synthesized. The photophysical properties of CzPyr–H and CzPyr–OMe were systematically explored with the aim of switching the absorption and emission properties using trifluoroacetic acid (TFA) as an external analyte, thus realizing volatile acid sensing. The protonation of the central pyridazine unit led to a broad absorption band at longer wavelengths owing to intramolecular charge transfer (ICT), and the emission intensity gradually decreased with increasing TFA concentration. Density functional theory calculations of the HOMO–LUMO energy gaps and orbital distributions of CzPyr–H and CzPyr–OMe as well as their protonated forms, CzPyr–H(H+) and CzPyr–OMe(H+), confirmed that charge transfer occurred in the protonated species. In their aggregated solid states, both compounds showed interesting emission properties including aggregation-enhanced emission (AEE). Utilizing their TFA sensitivity and the AEE phenomenon, CzPyr–H and CzPyr–OMe were successfully applied as fluorescent probes for volatile acid detection and as security ink for information encryption on paper.

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