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16024-58-1 Usage

Chemical Properties

Colorless or light yellow liquid

Flammability and Explosibility

Notclassified

Check Digit Verification of cas no

The CAS Registry Mumber 16024-58-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,0,2 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16024-58:
(7*1)+(6*6)+(5*0)+(4*2)+(3*4)+(2*5)+(1*8)=81
81 % 10 = 1
So 16024-58-1 is a valid CAS Registry Number.
InChI:InChI=1/C7H14O5/c1-10-2-3-11-4-5-12-6-7(8)9/h2-6H2,1H3,(H,8,9)

16024-58-1 Well-known Company Product Price

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  • Aldrich

  • (407003)  2-[2-(2-Methoxyethoxy)ethoxy]aceticacid  technical grade

  • 16024-58-1

  • 407003-250ML

  • 2,204.28CNY

  • Detail

16024-58-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-[2-(2-METHOXYETHOXY)ETHOXY]ACETIC ACID

1.2 Other means of identification

Product number -
Other names O-[2-(2-Methoxyethoxy)ethyl]glycolic acid

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:16024-58-1 SDS

16024-58-1Synthetic route

triethylene glucol monomethyl ether
112-35-6

triethylene glucol monomethyl ether

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Conditions
ConditionsYield
With 2,2,6,6-tetramethyl-piperidine-N-oxyl; sodium hydrogencarbonate; sodium carbonate at 20℃; Electrochemical reaction;99%
Stage #1: triethylene glucol monomethyl ether With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hydrogencarbonate; sodium carbonate at 20℃; for 2h; aq. buffer; Electroliysis;
Stage #2: With Amberlite IR 120 for 0.5h; Mechanism; Solvent; Temperature; aq. buffer;
99%
Stage #1: triethylene glucol monomethyl ether With C29H44Cl2N2Ru; sodium hydroxide In water for 24h; Reflux;
Stage #2: With hydrogenchloride In water
88%
chloroacetic acid
79-11-8

chloroacetic acid

sodium compound of diethylene glycol-monoethyl ether

sodium compound of diethylene glycol-monoethyl ether

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Conditions
ConditionsYield
With diethyl ether
bicyclo[2.2.1]hept-5-ene-2-carboxylic acid 2-[2-(2-{2-[2-(2-methoxyethoxy)ethoxy]acetoxy}ethoxy)ethoxy]ethyl ester
862072-76-2

bicyclo[2.2.1]hept-5-ene-2-carboxylic acid 2-[2-(2-{2-[2-(2-methoxyethoxy)ethoxy]acetoxy}ethoxy)ethoxy]ethyl ester

A

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

B

bicyclo[2.2.1]hept-2-ene-5-carbonyl chloride
27063-48-5, 34733-86-3, 37750-50-8, 117835-14-0, 143916-13-6

bicyclo[2.2.1]hept-2-ene-5-carbonyl chloride

C

2,2'-[1,2-ethanediylbis(oxy)]bisethanol
112-27-6

2,2'-[1,2-ethanediylbis(oxy)]bisethanol

Conditions
ConditionsYield
With phosphate-buffered saline at 80℃; pH=7.4; Kinetics; Further Variations:; pH-values; Temperatures;
CC-4 silica gel

CC-4 silica gel

triethylene glucol monomethyl ether
112-35-6

triethylene glucol monomethyl ether

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Conditions
ConditionsYield
With hydrogenchloride; sodium hydrogencarbonate In water
p-nitrophenyl 2-[2-(2-methoxyethoxy)ethoxy]acetate
1252661-82-7

p-nitrophenyl 2-[2-(2-methoxyethoxy)ethoxy]acetate

A

4-nitro-phenol
100-02-7

4-nitro-phenol

B

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Conditions
ConditionsYield
With 6-{N-[6-(6-deoxy-α-cyclodextrinylthio)acetyl]-L-histidylamino}-6-deoxy-β-cyclodextrin at 25℃; pH=7.4; Kinetics; aq. phosphate buffer;
m-nitrophenyl 2-[2-(2-methoxyethoxy)ethoxy]acetate
1252661-81-6

m-nitrophenyl 2-[2-(2-methoxyethoxy)ethoxy]acetate

A

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

B

meta-nitrophenol
554-84-7

meta-nitrophenol

Conditions
ConditionsYield
With 6-{N-[6-(6-deoxy-α-cyclodextrinylthio)acetyl]-L-histidylamino}-6-deoxy-β-cyclodextrin at 25℃; pH=7.4; Kinetics; aq. phosphate buffer;
C11H22O5

C11H22O5

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Conditions
ConditionsYield
With methoxybenzene; trifluoroacetic acid In dichloromethane at 20℃; for 5h;
With methoxybenzene; trifluoroacetic acid In dichloromethane at 20℃; for 5h;
With trifluoroacetic acid In dichloromethane at 20℃;400 mg
2-(2-methoxyethoxy)ethyl alcohol
111-77-3

2-(2-methoxyethoxy)ethyl alcohol

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: potassium tert-butylate / tert-butyl alcohol / 2 h / 20 °C
1.2: 12 h / 20 °C
2.1: trifluoroacetic acid; methoxybenzene / dichloromethane / 5 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: sodium hydride / tetrahydrofuran / 3 h / 20 - 25 °C / Cooling with ice
2: trifluoroacetic acid / dichloromethane / 20 °C
View Scheme
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

N-(fluoren-9-ylmethoxycarbonyl)glycine
29022-11-5

N-(fluoren-9-ylmethoxycarbonyl)glycine

[2-(2-{2-[2-(2-methoxy-ethoxy)-ethoxy]-acetylamino}-acetylamino)-acetylamino]-acetic acid
881027-71-0

[2-(2-{2-[2-(2-methoxy-ethoxy)-ethoxy]-acetylamino}-acetylamino)-acetylamino]-acetic acid

Conditions
ConditionsYield
Stage #1: N-(fluoren-9-ylmethoxycarbonyl)glycine With N-ethyl-N,N-diisopropylamine In dichloromethane solid phase reaction;
Stage #2: With piperidine In N,N-dimethyl-formamide solid phase reaction;
Stage #3: 2-[2-(2-methoxyethoxy)etoxy]acetic acid Further stages;
100%
tetrakis(acetato)diaquadicopper(II)

tetrakis(acetato)diaquadicopper(II)

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

copper(II) 2-[2-(2-methoxyethoxy)ethoxy]acetate

copper(II) 2-[2-(2-methoxyethoxy)ethoxy]acetate

Conditions
ConditionsYield
In toluene100%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

2,3,4,5,6-pentafluorophenol
771-61-9

2,3,4,5,6-pentafluorophenol

O-[2-(2-methoxyethoxy)-ethyl]glycolic acid pentafluorophenol ester

O-[2-(2-methoxyethoxy)-ethyl]glycolic acid pentafluorophenol ester

Conditions
ConditionsYield
With dicyclohexyl-carbodiimide In dichloromethane at 0 - 20℃; for 6h;99%
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 20℃; for 6h;50%
tributylphosphine
998-40-3

tributylphosphine

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

copper

copper

[(tri-n-butyl-phosphane)3CuO2C(CH2OCH2)3H]

[(tri-n-butyl-phosphane)3CuO2C(CH2OCH2)3H]

Conditions
ConditionsYield
With triethylamine In acetonitrile byproducts: H2; Electrolysis; (Ar); Cu electrodes used; at 4.0 V at 40°C for 1 h and at 2.0 V for 4 h; evapd. (vac.); obtained as an oil; elem. anal.;98%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

Oleanolic acid
508-02-1

Oleanolic acid

C37H60O7

C37H60O7

Conditions
ConditionsYield
With dmap In N,N-dimethyl-formamide for 4h; Reflux;95%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

N-α-Boc-lys-OMe*HCl

N-α-Boc-lys-OMe*HCl

(S)-methyl 16-(tert-butoxycarbonylamino)-10-oxo-2,5,8-trioxa-11-azaheptadecan-17-oate

(S)-methyl 16-(tert-butoxycarbonylamino)-10-oxo-2,5,8-trioxa-11-azaheptadecan-17-oate

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In N,N-dimethyl-formamide at 20℃; for 60h;94.7%
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In N,N-dimethyl-formamide at 20℃; for 60h;
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

oleanolic acid benzyl ester
303114-51-4

oleanolic acid benzyl ester

C44H66O7

C44H66O7

Conditions
ConditionsYield
With dmap In N,N-dimethyl-formamide for 4h; Reflux;94%
2-octyldodecan-1-ol
5333-42-6

2-octyldodecan-1-ol

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

2-octyldodecyl 2-(2-(2-methoxyethoxy)ethoxy)acetate

2-octyldodecyl 2-(2-(2-methoxyethoxy)ethoxy)acetate

Conditions
ConditionsYield
With p-toluenesulfonic acid monohydrate94%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C40H70N2O2

C40H70N2O2

C47H82N2O6

C47H82N2O6

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 4h;94%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C38H45N7O7

C38H45N7O7

C37H55N7O9

C37H55N7O9

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide at 0 - 20℃; Inert atmosphere;94%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C41H62N10O10S

C41H62N10O10S

C48H74N10O14S

C48H74N10O14S

Conditions
ConditionsYield
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine; ethyl cyanoglyoxylate-2-oxime In N,N-dimethyl-formamide93%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

pivaloyl chloride
3282-30-2

pivaloyl chloride

C12H22O6
883564-87-2

C12H22O6

Conditions
ConditionsYield
92%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

m-phenylenediamine
108-45-2

m-phenylenediamine

N,N'-(1,3-phenylene)bis(2-(2-(2-methoxyethoxy)ethoxy)acetamide)

N,N'-(1,3-phenylene)bis(2-(2-(2-methoxyethoxy)ethoxy)acetamide)

Conditions
ConditionsYield
With dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; for 12h;92%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

benzyl (2α,3β)-2,3-dihydroxy-olean-12-en-28-oate
464876-77-5

benzyl (2α,3β)-2,3-dihydroxy-olean-12-en-28-oate

C51H78O12

C51H78O12

Conditions
ConditionsYield
With dmap In N,N-dimethyl-formamide for 4h; Reflux;92%
(S)-(+)-2-amino-2-methyl-3-hydroxypropanoic acid
3398-40-1, 5424-29-3, 16820-18-1, 81132-44-7

(S)-(+)-2-amino-2-methyl-3-hydroxypropanoic acid

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

2-((tert-butyldiphenylsilyl)oxy)propanoic acid

2-((tert-butyldiphenylsilyl)oxy)propanoic acid

C23H31NO5Si

C23H31NO5Si

Conditions
ConditionsYield
Stage #1: 2-[2-(2-methoxyethoxy)etoxy]acetic acid; 2-((tert-butyldiphenylsilyl)oxy)propanoic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0℃; for 0.166667h;
Stage #2: (S)-(+)-2-amino-2-methyl-3-hydroxypropanoic acid With triethylamine In dichloromethane at 23℃; for 18h;
92%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C33H56N2O2

C33H56N2O2

C40H68N2O6

C40H68N2O6

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 4h;91%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C36H62N2O3

C36H62N2O3

C43H74N2O7

C43H74N2O7

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 4h;91%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

2-(2-(2-methoxyethoxy)ethoxy)acetyl chloride
63881-16-3

2-(2-(2-methoxyethoxy)ethoxy)acetyl chloride

Conditions
ConditionsYield
With oxalyl dichloride In toluene at 65℃; for 4h;90%
With thionyl chloride80%
With thionyl chloride; benzene
1-hydroxy-pyrrolidine-2,5-dione
6066-82-6

1-hydroxy-pyrrolidine-2,5-dione

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

N-hydroxysuccinimidyl 2-[2-(2-methoxyethoxy)etoxy]acetate

N-hydroxysuccinimidyl 2-[2-(2-methoxyethoxy)etoxy]acetate

Conditions
ConditionsYield
With dicyclohexyl-carbodiimide In tetrahydrofuran for 16h; cooling;90%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C44H72O12

C44H72O12

Conditions
ConditionsYield
With dmap In N,N-dimethyl-formamide for 4h; Reflux;90%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C36H62N2O2

C36H62N2O2

C43H74N2O6

C43H74N2O6

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 4h;89%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C40H70N2O3

C40H70N2O3

C47H82N2O7

C47H82N2O7

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 4h;89%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

methyl 6-amino-2-naphthoate
5159-59-1

methyl 6-amino-2-naphthoate

C19H23NO6
1313494-73-3

C19H23NO6

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 1h;88%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C33H56N2O3

C33H56N2O3

C40H68N2O7

C40H68N2O7

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 4h;88%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

triglycine benzyl ester toluenesulfonic acid salt

triglycine benzyl ester toluenesulfonic acid salt

[2-(2-{2-[2-(2-methoxy-ethoxy)-ethoxy]-acetylamino}-acetylamino)-acetylamino]-acetic acid benzyl ester
881027-70-9

[2-(2-{2-[2-(2-methoxy-ethoxy)-ethoxy]-acetylamino}-acetylamino)-acetylamino]-acetic acid benzyl ester

Conditions
ConditionsYield
Stage #1: 2-[2-(2-methoxyethoxy)etoxy]acetic acid With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 0.5h;
Stage #2: triglycine benzyl ester toluenesulfonic acid salt With triethylamine In dichloromethane at 20℃;
86%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

cryptophycin 55

cryptophycin 55

cryptophycin 55 3,6,9-tioxadecanoate

cryptophycin 55 3,6,9-tioxadecanoate

Conditions
ConditionsYield
With dicyclohexyl-carbodiimide; dmap In dichloromethane at 20℃; for 0.5h;86%
4-nitro-phenol
100-02-7

4-nitro-phenol

2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

p-nitrophenyl 2-[2-(2-methoxyethoxy)ethoxy]acetate
1252661-82-7

p-nitrophenyl 2-[2-(2-methoxyethoxy)ethoxy]acetate

Conditions
ConditionsYield
With dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃;86%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C17H13NO2
1159995-72-8

C17H13NO2

C24H25NO6
1313494-77-7

C24H25NO6

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 2h;86%
2-[2-(2-methoxyethoxy)etoxy]acetic acid
16024-58-1

2-[2-(2-methoxyethoxy)etoxy]acetic acid

C19H19F13N2O6
1020857-22-0

C19H19F13N2O6

N-[2-(benzyloxycarbonyl)aminoethyl]-N-(1H,1H,2H,2H,4H,4H-3,6,9,12-tetraoxaperfluorotridecyl)-2-[2-(2-methoxyethoxy)ethoxy]acetamide
1020857-23-1

N-[2-(benzyloxycarbonyl)aminoethyl]-N-(1H,1H,2H,2H,4H,4H-3,6,9,12-tetraoxaperfluorotridecyl)-2-[2-(2-methoxyethoxy)ethoxy]acetamide

Conditions
ConditionsYield
With 1-hydroxy-pyrrolidine-2,5-dione; dicyclohexyl-carbodiimide In N,N-dimethyl-formamide at 0 - 20℃; for 19h;84%

16024-58-1Relevant articles and documents

BENZODICYCLOALKANE DERIVATIVE, PREPARATION METHOD AND USE THEREOF

-

, (2019/06/19)

It is provided herein a benzobicycloalkane derivative, and a preparation method and use thereof. In particular, it is provided herein a compound of Formula (I), or a pharmaceutically acceptable salt, stereoisomer or solvate thereof, a preparation method, and a use thereof in preparation of drugs for treating pain.

Preparation and application of monodisperse polyethylene glycol monomethyl ether modified propofol prodrug

-

Paragraph 0042-0045, (2018/07/06)

Belonging to the field of organic chemistry and pharmaceutical chemicals, the invention discloses preparation and application of a monodisperse polyethylene glycol monomethyl ether modified propofol prodrug with a novel structure. Monodisperse polyethylene glycol monomethyl ether and propofol can be connected by an in-vivo degradable chemical bond to prepare a series of carbonic ester type and acetic ester type prodrugs respectively. By adjusting the length of the monodisperse polyethylene glycol monomethyl ether chain, the method can synthesize corresponding water-soluble propofol prodrugs, the longer the monodisperse polyethylene glycol monomethyl ether chain is, the better the water solubility is, along with the improvement of the water solubility, the prodrug can be made into aqueous solution preparations so as to avoid the defects of fat emulsion in propofol fat emulsions. The method provided by the invention has the advantages of simple reaction, mild conditions and low cost, andis convenient for industrial production.

Ceria supported gold-platinum catalysts for the selective oxidation of alkyl ethoxylates

Heidkamp, Katharina,Aytemir, Memet,Vorlop, Klaus-Dieter,Pruesse, Ulf

, p. 2984 - 2992 (2013/11/06)

This work covers the development of a ceria based AuPt catalyst for the selective aerobic oxidation of alkyl ethoxylates to their corresponding carboxylic acids. By optimizing metal loading and the Au to Pt ratio the activity of the catalyst could be increased significantly, while maintaining total selectivity. Although the choice of ceria as a support helped to suppress intermediate metal leaching, the catalyst still showed poor long-term stability in repeated batches. The cause for deactivation could finally be identified by TPR studies as over-oxidation. These suspicions were confirmed by a long-term stability study in continuous-mode. It proved to be possible to deactivate the catalyst on purpose by employing unfavourable oxidising reaction conditions, i.e. low substrate concentrations and excess oxygen. By avoiding such unfavourable conditions either in continuous-flow mode or in repeated batches, the long-term stability of the catalyst increased tremendously. A substrate screening of various ethoxylates showed that the catalyst was very well-suited to selectively oxidize a wide range of alkyl ethoxylates.

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