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864443-52-7

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864443-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 864443-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,4,4,4 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 864443-52:
(8*8)+(7*6)+(6*4)+(5*4)+(4*4)+(3*3)+(2*5)+(1*2)=187
187 % 10 = 7
So 864443-52-7 is a valid CAS Registry Number.

864443-52-7Relevant articles and documents

Asymmetric decarboxylative claisen rearrangement reactions of sulfoximine-substituted allylic tosylacetic esters

Craig, Donald,Grellepois, Fabienne,White, Andrew J. P.

, p. 6827 - 6832 (2007/10/03)

Allylic acetate esters containing a variety of N-arylsulfonyl sulfoximines on the acetyl residue have been prepared and submitted to the decarboxylative Claisen rearrangement reaction. Rearranged products were isolated in generally good yields, and diastereoselectivities up to 82:18 have been obtained. The N-(2,4,6-triisopropylphenylsulfonyl)-S-phenyl sulfoximine moiety gave the best selectivity. The stereochemistry of the major isomer was established by X-ray crystallography. A model to explain the stereochemical course of the rearrangement is proposed.

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