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1181669-81-7

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1181669-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1181669-81-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,1,6,6 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1181669-81:
(9*1)+(8*1)+(7*8)+(6*1)+(5*6)+(4*6)+(3*9)+(2*8)+(1*1)=177
177 % 10 = 7
So 1181669-81-7 is a valid CAS Registry Number.

1181669-81-7Relevant articles and documents

Selenium-catalyzed oxidative c(sp2)-h amination of alkenes exemplified in the expedient synthesis of (Aza-)indoles

Ortgies, Stefan,Breder, Alexander

supporting information, p. 2748 - 2751 (2015/06/16)

A new selenium-catalyzed protocol for the direct, intramolecular amination of C(sp2)-H bonds using N-fluorobenzenesulfonimide as the terminal oxidant is reported. This method enables the facile formation of a broad range of diversely functionalized indoles and azaindoles derived from easily accessible ortho-vinyl anilines and vinylated aminopyridines, respectively. The procedure exploits the pronounced carbophilicity of selenium electrophiles for the catalytic activation of alkenes and leads to the formation of C(sp2)-N bonds in high yields and with excellent functional group tolerance.

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