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89882-25-7

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89882-25-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89882-25-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,8,8 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89882-25:
(7*8)+(6*9)+(5*8)+(4*8)+(3*2)+(2*2)+(1*5)=197
197 % 10 = 7
So 89882-25-7 is a valid CAS Registry Number.

89882-25-7Downstream Products

89882-25-7Relevant articles and documents

The Diastereoselectivity of Electrophilic Attack on Trigonal Carbon Adjacent To a Stereogenic Centre: Diastereoselective Alkylation and Protonation of Open-chain Enolates Having a Stereogenic Centre Carrying a Silyl Group at the β Position

Crump, Roger A. N. C.,Fleming, Ian,Hill, John H. M.,Parker, David,Reddy, N. Laxma,Waterson, David

, p. 3277 - 3294 (2007/10/02)

The alkylation and protonation of enolates having a β-silyl group, prepared by conjugate addition of a silyl-cuprate reagent to enone systems, are almost always highly diastereoselective in the sense 3 in a wide variety of reactions.The effects of varying

Diastereoselectivity in the Alkylation of Enolates having an Adjacent Silyl Group

Bernhard, Werner,Fleming, Ian,Waterson, David

, p. 28 - 29 (2007/10/02)

The methylation of open-chain enolates having an adjacent silyl group is highly diastereoselective in favour of the isomer (2) having the silyl and methyl groups trans on the carbon chain; protonation of the corresponding enolate, already carrying the methyl group, gives the other diastereoisomer (3), but with somewhat lower diastereoselectivity.

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