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65957-22-4

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65957-22-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65957-22-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,9,5 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 65957-22:
(7*6)+(6*5)+(5*9)+(4*5)+(3*7)+(2*2)+(1*2)=164
164 % 10 = 4
So 65957-22-4 is a valid CAS Registry Number.

65957-22-4Downstream Products

65957-22-4Relevant articles and documents

Access to Amidines and Arylbenzimidazoles: Zinc-Promoted Rearrangement of Oxime Acetates

Zhu, Zhongzhi,Cen, Jinghe,Tang, Xiaodong,Li, Jianxiao,Wu, Wanqing,Jiang, Huanfeng

, p. 2020 - 2031 (2018/04/09)

An efficient and straightforward zinc-promoted rearrangement of oxime acetates with arylamines for the synthesis of amidines has been developed under mild conditions. This process involves N?O/C?C bond cleavages and C?C/C?N bond formations. Various oxime

Facile one-pot syntheses of amidines and enamines from oximes via Beckmann rearrangement using trifluoromethanesulfonic anhydride

Takuwa, Tomofumi,Minowa, Tomofumi,Onishi, Jim Yoshitaka,Mukaiyama, Teruaki

, p. 1717 - 1725 (2007/10/03)

Iminocarbocation intermediates were in situ-generated by treating various oximes with trifluoromethanesulfonic anhydride (Tf2O) in the presence of triethylamine in toluene and nucleophilic trapping with amines or sodium enolates under mild conditions afforded the corresponding amidines and enamines. Some of the thus-obtained enamines were converted to 2-substituted 4-oxo-3-quinolinecarboxylic acid derivatives by subsequent intramolecular Friedel-Crafts acylation.

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