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230313-64-1

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230313-64-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 230313-64-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,0,3,1 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 230313-64:
(8*2)+(7*3)+(6*0)+(5*3)+(4*1)+(3*3)+(2*6)+(1*4)=81
81 % 10 = 1
So 230313-64-1 is a valid CAS Registry Number.

230313-64-1Downstream Products

230313-64-1Relevant articles and documents

Preparation of 1,2-substituted benzimidazolesviaa copper-catalyzed three component coupling reaction

Yang, Weiguang,Zhao, Yu,Zhou, Zitong,Li, Li,Cui, Liao,Luo, Hui

, p. 8701 - 8707 (2021)

1,2-Substituted benzimidazoles were prepared by simply stirring a mixture of copper catalysts,N-substitutedo-phenylenediamines, sulfonyl azides and terminal alkynes. Particularly, the intermediateN-sulfonylketenimine occurred with two nucleophilic addition and the sulfonyl group was eliminatedviacyclization. In a way, sulfonyl azides and copper catalysts activated the terminal alkynes to synthesize benzimidazoles.

One-pot synthesis of functionalized benzimidazoles and 1H-pyrimidines via cascade reactions of o-aminoanilines or naphthalene-1,8-diamine with alkynes and p-tolylsulfonyl azide

She, Jin,Jiang, Zheng,Wang, Yanguang

experimental part, p. 2023 - 2027 (2010/03/04)

A one-pot synthesis of functionalized benzimidazoles and 1H-pyrimidines via the cascade reactions of o-aminoanilines or naphthalene-1,8-diamine with terminal alkynes and p-tolylsulfonyl azide is reported. The protocol is efficient and general. Georg Thiem

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