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75814-31-2

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75814-31-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75814-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,8,1 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75814-31:
(7*7)+(6*5)+(5*8)+(4*1)+(3*4)+(2*3)+(1*1)=142
142 % 10 = 2
So 75814-31-2 is a valid CAS Registry Number.

75814-31-2Downstream Products

75814-31-2Relevant articles and documents

Reaction of Chiral Lithium Diorganocopper Reagents, LiRR*Cu, with α,β-Unsaturated Esters of Chiral Alcohols

Gustafsson, Bill,Hansson, Anna-Tora,Ullenius, Christina

, p. 113 - 118 (2007/10/02)

Conjugate addition of organometallic reagents to chiral esters of trans-3-phenyl-2-propenoic or trans-2-butenoic acid has been studied.The reagents were PhMgBr, LiPh2Cu, LiMe2Cu, LiMeR*Cu, and LiPhR*Cu.The chiral ligand R* was the 2-(1-dimethylaminoethyl)phenyl group.The assymmetric induction varied between 0.3 and 49percent and was in some cases improved by the presence of the R* ligand.The influence of substituents on the β-carbon of the α,β-unsaturated esters on the stereochemical course of the reaction is related to their coordination ability.The directing effects of the chiral ester functions are discussed.

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