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1271631-59-4

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1271631-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1271631-59-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,1,6,3 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1271631-59:
(9*1)+(8*2)+(7*7)+(6*1)+(5*6)+(4*3)+(3*1)+(2*5)+(1*9)=144
144 % 10 = 4
So 1271631-59-4 is a valid CAS Registry Number.

1271631-59-4Downstream Products

1271631-59-4Relevant articles and documents

Synthesis and application of benzyl-TMS derivatives as bench stable benzyl anion equivalents

Das, Manas,O'Shea, Donal F.

, p. 6448 - 6460 (2013/07/26)

The regioselective benzylic metalation of toluenes using BuLi/KO tBu/TMP(H) (LiNK metalation conditions) and subsequent transmetalation to Si by reaction with TMSCl provides a general one-pot procedure for the synthesis of substituted benzyltrimethylsilanes. ArCH 2Si(Me)3 derivatives are bench stable reagents yet can serve as benzyl anion equivalents under mild reaction conditions. Following activation with fluoride they can successfully participate in a wide range of additions to both non-enolizable and enolizable carbonyls. In addition, their use in the synthesis of isochromanones and trifluoromethylated amines is illustrated. The broad synthetic scope and mild practical conditions of use for ArCH2Si(Me)3 reagents demonstrate their general potential as benzyl anion equivalents.

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