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142184-57-4

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142184-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142184-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,1,8 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 142184-57:
(8*1)+(7*4)+(6*2)+(5*1)+(4*8)+(3*4)+(2*5)+(1*7)=114
114 % 10 = 4
So 142184-57-4 is a valid CAS Registry Number.

142184-57-4Downstream Products

142184-57-4Relevant articles and documents

Asymmetric reduction of α-(trimethylsilyl)methyl-β-ketosulfoxide with DIBAL under basic conditions

Nakamura, Shuichi,Nakayama, Jun-ichi,Toru, Takeshi

, p. 5766 - 5768 (2007/10/03)

The reaction of the α-carbanion of p-tolyl 2-(trimethylsilyl)ethyl sulfoxide with esters followed by reduction with DIBAL gave α-(trimethylsilyl)methyl-β-hydroxysulfoxides with high stereoselectivity. The stereoselective reaction was demonstrated to proceed through a dynamic kinetic resolution pathway via a six-membered cyclic transition state involving Si-O interaction. These reactions provide a convenient route for the synthesis of optically pure allylic alcohols.

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