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665012-61-3

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665012-61-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 665012-61-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,1 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 665012-61:
(8*6)+(7*6)+(6*5)+(5*0)+(4*1)+(3*2)+(2*6)+(1*1)=143
143 % 10 = 3
So 665012-61-3 is a valid CAS Registry Number.

665012-61-3Relevant articles and documents

Four-component coupling reactions of silylacetylenes, allyl carbonates, and trimethylsilyl azide catalyzed by a Pd(0)-Cu(I) bimetallic catalyst. Fully substituted triazole synthesis from seemingly internal alkynes

Kamijo, Shin,Jin, Tienan,Yamamoto, Yoshinori

, p. 689 - 691 (2004)

Fully substituted triazoles were synthesized via the four-component coupling reaction of unactivated silylacetylenes, two equivalents of allyl carbonates, and trimethylsilyl azide in the presence of a Pd(0)-Cu(I) bimetallic catalyst. Various trisubstituted 1,2,3-triazoles were obtained in good yields. The reaction most probably proceeds through the [3+2] cycloaddition reaction between the alkynylcopper species and azide followed by the cross-coupling reaction between the vinylcopper intermediate and π-allylpalladium complex.

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