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861659-75-8

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861659-75-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 861659-75-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,1,6,5 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 861659-75:
(8*8)+(7*6)+(6*1)+(5*6)+(4*5)+(3*9)+(2*7)+(1*5)=208
208 % 10 = 8
So 861659-75-8 is a valid CAS Registry Number.

861659-75-8Relevant articles and documents

Asymmetric 1,4-addition of aryltrialkoxysilanes to α,β-unsaturated esters and amides catalyzed by a chiral rhodium complex

Oi, Shuichi,Taira, Akio,Honma, Yoshio,Sato, Takashi,Inoue, Yoshio

, p. 598 - 602 (2007/10/03)

A highly enantioselective 1,4-addition of aryltrialkoxysilanes to α,β-unsaturated esters and amides was successfully catalyzed by a chiral rhodium complex generated from [Rh(cod)(MeCN)2]BF4 and (S)-BINAP.

Rhodium-catalyzed asymmetric 1,4-addition of arylboron reagents to α,β-unsaturated esters

Takaya, Yoshiaki,Senda, Taichi,Kurushima, Hiroaki,Ogasawara, Masamichi,Hayashi, Tamio

, p. 4047 - 4056 (2007/10/03)

Reaction of arylboron reagents, arylboronic acids or arylborates, which are readily accessible by lithiation of aryl bromides followed by treatment with trimethoxyborane, with α,β-unsaturated esters in the presence of rhodium/(S)-binap catalyst proceeded with high enantioselectivity to give high yields of optically active β-aryl esters of up to 98% ee. The enantioselectivity depends on the steric bulkiness of the ester moiety.

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