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293731-49-4

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293731-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 293731-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,3,7,3 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 293731-49:
(8*2)+(7*9)+(6*3)+(5*7)+(4*3)+(3*1)+(2*4)+(1*9)=164
164 % 10 = 4
So 293731-49-4 is a valid CAS Registry Number.

293731-49-4Relevant articles and documents

Palladium-catalyzed carbonylation of benzylic ammonium salts to amides and esters: Via C-N bond activation

Yu, Weijie,Yang, Shuwu,Xiong, Fei,Fan, Tianxiang,Feng, Yan,Huang, Yuanyuan,Fu, Junkai,Wang, Tao

supporting information, p. 3099 - 3103 (2018/05/22)

An efficient palladium-catalyzed carbonylation reaction of readily available quaternary ammonium salts with CO is reported for the first time to afford arylacetamides and arylacetic acid esters via benzylic C-N bond cleavage. This protocol features mild reaction conditions under atmospheric pressure of CO, a redox-neutral process without an additional oxidant, and a broad substrate scope for various kinds of amines, alcohols and phenols.

Palladium-catalyzed benzylation of carboxylic acids with toluene via benzylic C-H activation

Liu, Hongqiang,Shi, Guangfa,Pan, Shulei,Jiang, Yuyu,Zhang, Yanghui

supporting information, p. 4098 - 4101 (2013/09/12)

Direct benzylation of carboxylic acids with toluene has been developed via palladium-catalyzed C-H acyloxylation under 1 atm of oxygen. This reaction demonstrates good functional group tolerance and high yields, providing a facile, atom-economic, and efficient method for the synthesis of benzyl esters.

Asymmetric synthesis of (S)-β2-homoarylglycines

Calmes, Monique,Escale, Francoise,Glot, Christele,Rolland, Marc,Martinez, Jean

, p. 2459 - 2466 (2007/10/03)

The synthesis of racemic N-phthalyl β2-homoarylglycines 5 and their asymmetric transformation have been investigated. The key step is the stereoselective addition of the (R)-pantolactone to the corresponding prochiral ketene 7.

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