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20461-81-8

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20461-81-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20461-81-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,6 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20461-81:
(7*2)+(6*0)+(5*4)+(4*6)+(3*1)+(2*8)+(1*1)=78
78 % 10 = 8
So 20461-81-8 is a valid CAS Registry Number.

20461-81-8Relevant articles and documents

Copper-Catalyzed Carbenoid Insertion Reactions of α-Diazoesters and α-Diazoketones into Si-H and S-H Bonds

Keipour, Hoda,Jalba, Angela,Delage-Laurin, Léo,Ollevier, Thierry

, p. 3000 - 3010 (2017)

An efficient copper-catalyzed carbenoid insertion reaction of α-diazo carbonyl compounds into Si-H and S-H bonds was developed. A wide range of α-silylesters and α-thioesters was obtained in high yields (up to 98%) from α-diazoesters using 5 mol% of a simple copper(I) salt as catalyst. Using 0.05 mol% of the same catalyst, α-diazoketones led to α-silylketones in low to good yields (up to 70%).

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