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40582-90-9

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40582-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40582-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,5,8 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40582-90:
(7*4)+(6*0)+(5*5)+(4*8)+(3*2)+(2*9)+(1*0)=109
109 % 10 = 9
So 40582-90-9 is a valid CAS Registry Number.

40582-90-9Downstream Products

40582-90-9Relevant articles and documents

Conjugate Addition Reactions of α,β-Unsaturated Ketones with Higher Order, Mixed Organocuprate Reagents, R2Cu(CN)Li2

Lipshutz, Bruce H.,Wilhelm, Robert S.,Kozlowski, Joseph A.

, p. 3938 - 3942 (2007/10/02)

Conjugate reactions of mixed cuprates R2Cu(CN)Li2 with α,β-unsaturated ketones are reported.These reagents, in most cases, react extremely rapidly affording the corresponding alkylated ketones in high yields.Attempts at trapping the intermediate enolates appeared to be successful using MeI as electrophile; however, the method is not general and was, therefore, not pursued.The effects of solvent and ligand composition on R2Cu(CN)Li2 as well as on the more highly mixed species RTRRCu(CN)Li2 have been examined.The selectivity of ligand transfer in these latter,second generation organocuprates is also discussed.

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