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143879-16-7

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143879-16-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143879-16-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,8,7 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 143879-16:
(8*1)+(7*4)+(6*3)+(5*8)+(4*7)+(3*9)+(2*1)+(1*6)=157
157 % 10 = 7
So 143879-16-7 is a valid CAS Registry Number.

143879-16-7Relevant articles and documents

Kinetic resolution in asymmetric anti aldol reactions of branched and straight chain racemic 2-phenylsulfanyl aldehydes: Asymmetric synthesis of cyclic ethers and lactones by phenylsulfanyl migration

Chibale, Kelly,Warren, Stuart

, p. 1935 - 1940 (1996)

The kinetic resolution of branched and straight chain 2-phenylsulfanyl aldehydes by the Lewis acid-catalysed asymmetric anti aldol reaction followed by reduction to single enantiomers of 1,3-diols and/or acid-catalysed cyclisation with PhS migration provides a route to enantiomerically pure cyclic ethers and lactones with full stereochemical control.

Kinetic resolutions in anti aldol reactions with racemic 2-phenylthio aldehydes: Asymmetric synthesis of cyclic ethers and lactones with phenylthio migration

Chibale,Warren

, p. 4369 - 4372 (2007/10/02)

Kinetic resolutions in Lewis acid catalysed asymmetric anti aldol reactions of the boron enolate of imide (2) with racemic 2-phenylthio aldehydes (3a) - (3c) give good yields of anti,anti aldols (7). Synthesis of homochiral cyclic ethers (4a) - (4c) and (

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