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111341-49-2

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111341-49-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111341-49-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,3,4 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 111341-49:
(8*1)+(7*1)+(6*1)+(5*3)+(4*4)+(3*1)+(2*4)+(1*9)=72
72 % 10 = 2
So 111341-49-2 is a valid CAS Registry Number.

111341-49-2Relevant articles and documents

CYCLIC ETHER SYNTHESIS: SULFENYLETHERIFICATION WITH BENZENESULFENYL CHLORIDE/N,N-DIISOPROPYLETHYLAMINE AND SULFENATE ESTER CYCLOADDITIONS

Tuladhar, Sudersan M.,Fallis, Alex G.

, p. 1833 - 1837 (2007/10/02)

A general method for the formation of the cyclic ethers 9, 10, 13, 14, 16 and the lactone 30 is described.The procedure employs benzenesulfenyl chloride prepared in situ in acetonitrile and N,N-diisopropylethylamine to generate a thiiranium (episulfonium) ion intermediate from which the cyclic products arise by internal nucleophilic displacement.In the special case of the norbornene alcohols 1 and 2 the oxethanes 5 and 6 are formed by intramolecular sulfenate ester cycloaddition.

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