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19544-43-5

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19544-43-5 Usage

General Description

Benzyl butanedioic acid anhydride is a chemical compound with the molecular formula C14H12O3. It is a derivative of butanedioic acid, also known as succinic acid, and is formed by the dehydration of benzyl succinic acid. Benzyl butanedioic acid anhydride is used as a monomer for the synthesis of polymers and as a crosslinking agent in the production of resins and adhesives. It is also used in the manufacture of pharmaceuticals and agricultural chemicals. It is a white solid with a characteristic odor and should be handled with care due to its potential irritant effects.

Check Digit Verification of cas no

The CAS Registry Mumber 19544-43-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,4 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19544-43:
(7*1)+(6*9)+(5*5)+(4*4)+(3*4)+(2*4)+(1*3)=125
125 % 10 = 5
So 19544-43-5 is a valid CAS Registry Number.

19544-43-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 3-benzyloxolane-2,5-dione

1.2 Other means of identification

Product number -
Other names 3-Benzylsuccinic anhydride

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:19544-43-5 SDS

19544-43-5Relevant articles and documents

Benzothiazolines as radical transfer reagents: Hydroalkylation and hydroacylation of alkenes by radical generation under photoirradiation conditions

Uchikura, Tatsuhiro,Moriyama, Kaworuko,Toda, Mitsuhiro,Mouri, Toshiki,Ibá?ez, Ignacio,Akiyama, Takahiko

, p. 11171 - 11174 (2019/09/30)

Novel radical transfer reagents under photoirradiation conditions were developed by the use of benzothiazoline derivatives. These reagents enabled both hydroalkylation and hydroacylation of alkenes under neutral conditions at ambient temperature without a

Succinic anhydrides from epoxides

-

Page/Page column 24; 25; 26; 29; 30, (2013/07/25)

Catalysts and methods for the double carbonylation of epoxides are disclosed. Each epoxide molecule reacts with two molecules of carbon monoxide to produce a succinic anhydride. The reaction is facilitated by catalysts combining a Lewis acidic species with a transition metal carbonyl complex. The double carbonylation is achieved in single process by using reaction conditions under which both carbonylation reactions occur without the necessity of isolating or purifying the product of the first carbonylation.

Catalytic double carbonylation of epoxides to succinic anhydrides: Catalyst discovery, reaction scope, and mechanism

Rowley, John M.,Lobkovsky, Emil B.,Coates, Geoffrey W.

, p. 4948 - 4960 (2008/02/03)

The first catalytic method for the efficient conversion of epoxides to succinic anhydrides via one-pot double carbonylation is reported. This reaction occurs in two stages: first, the epoxide is carbonylated to a β-lactone, and then the β-lactone is subsequently carbonylated to a succinic anhydride. This reaction is made possible by the bimetallic catalyst [(CITPP)Al(THF)2]+[Co(CO)4]- (1; CITPP = meso-tetra(4-chlorophenyl)porphyrinato; THF = tetrahydrofuran), which is highly active and selective for both epoxide and lactone carbonylation, and by the identification of a solvent that facilitates both stages. The catalysis is compatible with substituted epoxides having aliphatic, aromatic, alkene, ether, ester, alcohol, nitrile, and amide functional groups. Disubstituted and enantiomerically pure anhydrides are synthesized from epoxides with excellent retention of stereochemical purity. The mechanism of epoxide double carbonylation with 1 was investigated by in situ IR spectroscopy, which reveals that the two carbonylation stages are sequential and non-overlapping, such that epoxide carbonylation goes to completion before any of the intermediate β-lactone is consumed. The rates of both epoxide and lactone carbonylation are independent of carbon monoxide pressure and are first-order in the concentration of 1. The stages differ in that the rate of epoxide carbonylation is independent of substrate concentration and first-order in donor solvent, whereas the rate of lactone carbonylation is first-order in lactone and inversely dependent on the concentration of donor solvent. The opposite solvent effects and substrate order for these two stages are rationalized in terms of different resting states and rate-determining steps for each carbonylation reaction.

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