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57212-27-8

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57212-27-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57212-27-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,1 and 2 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57212-27:
(7*5)+(6*7)+(5*2)+(4*1)+(3*2)+(2*2)+(1*7)=108
108 % 10 = 8
So 57212-27-8 is a valid CAS Registry Number.

57212-27-8Relevant articles and documents

Palladium-Catalyzed Desulfurative Hiyama Coupling of Thioureas to Achieve Amides via Selective C-N Bond Cleavage

He, Zhanyu,Yan, Chu,Zhang, Mei,Irfan, Majeed,Wang, Zijia,Zeng, Zhuo

, p. 705 - 710 (2021/10/25)

Palladium-catalyzed Hiyama coupling of active thioureas via selective C-N bond cleavage is reported. Notably, the new approach employed active thioureas as coupling partners in the presence of arylsilanes to give amides in good yield. Further, this strategy, which utilized CuF 2as a key oxidant and activator, afforded various amide products under mild conditions and an easy to handle procedure without extra base.

Copper-Catalyzed Radical N-Demethylation of Amides Using N-Fluorobenzenesulfonimide as an Oxidant

Yi, Xuewen,Yi, Xuewen,Lei, Siyu,Liu, Wangsheng,Che, Fengrui,Yu, Chunzheng,Liu, Xuesong,Wang, Zonghua,Zhou, Xin,Zhang, Yuexia

supporting information, p. 4583 - 4587 (2020/05/05)

An unprecedented N-demethylation of N-methyl amides has been developed by use of N-fluorobenzenesulfonimide as an oxidant with the aid of a copper catalyst. The conversion of amides to carbinolamines involves successive single-electron transfer, hydrogen-atom transfer, and hydrolysis, and is accompanied by formation of N-(phenylsulfonyl)benzenesulfonamide. Carbinolamines spontaneously decompose to N-demethylated amides and formaldehyde, because of their inherent instability.

Palladium-catalyzed aminocarbonylation of aryl iodides with amides and N-alkyl anilines

Ran, Longfei,Ren, Zhi-Hui,Wang, Yao-Yu,Guan, Zheng-Hui

, p. 577 - 583 (2014/02/14)

A novel and efficient palladium-catalyzed aminocarbonylation of aryl iodides with amides and N-alkyl anilines has been developed. The reaction tolerates a wide range of functional groups and is a reliable method for the rapid synthesis of a variety of valuable imides and tertiary benzanilides under an atmospheric pressure of CO. Copyright

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