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1393689-92-3

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1393689-92-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1393689-92-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,3,6,8 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1393689-92:
(9*1)+(8*3)+(7*9)+(6*3)+(5*6)+(4*8)+(3*9)+(2*9)+(1*2)=223
223 % 10 = 3
So 1393689-92-3 is a valid CAS Registry Number.

1393689-92-3Relevant articles and documents

Room temperature copper(II)-catalyzed oxidative cyclization of enamides to 2,5-disubstituted oxazoles via vinylic C-H functionalization

Cheung, Chi Wai,Buchwald, Stephen L.

, p. 7526 - 7537 (2012/10/30)

A copper(II)-catalyzed oxidative cyclization of enamides to oxazoles via vinylic C-H bond functionalization at room temperature is described. Various 2,5-disubstituted oxazoles bearing aryl, vinyl, alkyl, and heteroaryl substituents could be synthesized in moderate to high yields. This reaction protocol is complementary to our previously reported iodine-mediated cyclization of enamides to afford 2,4,5-trisubstituted oxazoles.

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