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21490-63-1

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21490-63-1 Usage

Description

TRANS-2,3-EPOXYBUTANE, also known as trans-2,3-epoxybutane, is an organic compound with the molecular formula C4H8O. It is a colorless liquid that is characterized by the presence of an epoxy group (an oxygen atom connected to two carbon atoms) and a butane chain. TRANS-2,3-EPOXYBUTANE is known for its reactivity and is commonly used in various chemical reactions and applications.

Uses

Used in Chemical Synthesis:
TRANS-2,3-EPOXYBUTANE is used as a key intermediate in the synthesis of various organic compounds. Its epoxy group allows it to participate in a wide range of reactions, such as nucleophilic ring-opening, which can lead to the formation of different functional groups and molecular structures.
Used in Pharmaceutical Industry:
TRANS-2,3-EPOXYBUTANE is used as a chiral building block for the synthesis of pharmaceutical compounds. The enolate derived from trans-2,3-epoxybutane exhibits chiral recognition, which is crucial in the development of enantiomerically pure drugs. This property makes it a valuable component in the design and synthesis of chiral molecules with potential therapeutic applications.
Used in Polymer Industry:
TRANS-2,3-EPOXYBUTANE can be used as a monomer in the production of polymers. The epoxy group can undergo polymerization reactions, leading to the formation of polymers with unique properties, such as increased strength, flexibility, and chemical resistance.
Used in Chemical Research:
TRANS-2,3-EPOXYBUTANE is used as a research tool in the study of various chemical reactions and mechanisms. Its reactivity and the presence of the epoxy group make it an ideal candidate for investigating reaction pathways, understanding reaction kinetics, and exploring new synthetic strategies.

Check Digit Verification of cas no

The CAS Registry Mumber 21490-63-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,9 and 0 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21490-63:
(7*2)+(6*1)+(5*4)+(4*9)+(3*0)+(2*6)+(1*3)=91
91 % 10 = 1
So 21490-63-1 is a valid CAS Registry Number.
InChI:InChI=1/C4H8O/c1-3-4(2)5-3/h3-4H,1-2H3/t3-,4-/m0/s1

21490-63-1 Well-known Company Product Price

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  • Alfa Aesar

  • (B22005)  trans-2,3-Epoxybutane, 97%   

  • 21490-63-1

  • 1g

  • 414.0CNY

  • Detail
  • Alfa Aesar

  • (B22005)  trans-2,3-Epoxybutane, 97%   

  • 21490-63-1

  • 5g

  • 1259.0CNY

  • Detail
  • Alfa Aesar

  • (B22005)  trans-2,3-Epoxybutane, 97%   

  • 21490-63-1

  • 25g

  • 4971.0CNY

  • Detail

21490-63-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name trans-2,3-Epoxybutane

1.2 Other means of identification

Product number -
Other names trans-2,3-dimethyloxyrane

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:21490-63-1 SDS

21490-63-1Relevant articles and documents

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Hoesch,L.,Dreiding,A.S.

, p. 1995 - 2009 (1975)

-

Sato,Cvetanovic

, p. 1668,1671 (1958)

PROCESS FOR SYNTHESIS OF PICOLINAMIDES

-

Paragraph 0236, (2021/04/23)

The present technology relates to processes, mixtures and intermediates useful for making picolinamide fungicides. The picolinamide compounds are prepared by processes that include coupling together a 4-methoxy-3-acyloxypicolinic acid with key 2-amino-L-alaninate esters derived from substituted 2-phenylethanols.

Oxidation of lower alkenes by Α-oxygen (FeIII–O??)Α on the FeZSM-5 surface: The epoxidation or the allylic oxidation?

Starokon, Eugeny V.,Malykhin, Sergei E.,Parfenov, Mikhail V.,Zhidomirov, Georgy M.,Kharitonov, Alexander S.

, p. 43 - 51 (2017/11/15)

Reactions of anion-radical α-oxygen (FeIII–O??)α with propylene and 1-butene on sodium-modified FeZSM-5 zeolites were studied in the temperature range from ?60 to 25 °C. Products were extracted from the zeolite surface and identified. It was found that main reaction pathway was the epoxides formation. Selectivity for epoxides at ?60 °C was 59–64%. Other products were formed as a result of secondary transformations of epoxides on the zeolite surface. According to IR spectroscopy, the oxidation of propylene over the entire temperature range and 1-butene at ?60 °C were not accompanied by the formation of (FeIII–OH)α groups, in distinction to methane oxidation. This testifies that hydrogen abstraction does not occur. In case of 1-butene reaction with α-oxygen at 25 °C, hydrogen abstraction occurred but was insignificant, ca 7%. According to DFT calculation ferraoxetane intermediate formation is preferable over hydrogen abstraction. Following decomposition of this intermediate leads to the propylene oxide (PO) formation. The results may be relevant to the low selectivity problem of the silver catalyst in propylene epoxidation and raise doubts about the presently accepted mechanism explaining an adverse effect of allylic hydrogen.

Gas-phase dehydration of vicinal diols to epoxides: Dehydrative epoxidation over a Cs/SiO2 catalyst

Kim, Tae Yong,Baek, Jayeon,Song, Chyan Kyung,Yun, Yang Sik,Park, Dae Sung,Kim, Wooyoung,Han, Jeong Woo,Yi, Jongheop

, p. 85 - 99 (2015/09/28)

A novel type of dehydration reaction that produces epoxides from vicinal diols (dehydrative epoxidation) using a basic catalyst is reported. Epoxyethane, 1,2-epoxypropane, and 2,3-epoxybutane were produced from the dehydrative epoxidation of ethylene glycol, 1,2-propanediol, and 2,3-butanediol, respectively. Among a number of tested basic catalysts, the Cs/SiO2 catalyst showed outstanding performance for the dehydrative epoxidation of 2,3-butanediol and is considered to be the most promising catalyst for this type of reaction. In order to identify the superiority of the Cs/SiO2 catalyst and a mechanism of the reaction, structure-activity relationships were studied along with density functional theory (DFT) calculations. The following features are found to be responsible for the excellent activity of the Cs/SiO2 catalyst: i) strong basic sites formed by Cs+, ii) low penetration of Cs+ into SiO2 which permits basic sites to be accessible to the reactant, iii) stable basic sites due to the strong interactions between Cs+ and SiO2 surface, and iv) mildly acidic surface of SiO2 which is advantageous for the elimination to H2O. In addition, the dehydrative epoxidation involves an inversion of chirality (e.g. meso-2,3-butanediol (R,S) to trans-2,3-epoxybutane (R,R or S,S)), which is in agreement with DFT results that the reaction follows a stereospecific SN2-like mechanism.

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