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915939-64-9

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915939-64-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 915939-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,5,9,3 and 9 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 915939-64:
(8*9)+(7*1)+(6*5)+(5*9)+(4*3)+(3*9)+(2*6)+(1*4)=209
209 % 10 = 9
So 915939-64-9 is a valid CAS Registry Number.

915939-64-9Relevant articles and documents

Stereodivergent allylic substitutions with aryl acetic acid esters by synergistic iridium and lewis base catalysis

Jiang, Xingyu,Beiger, Jason J.,Hartwig, John F.

, p. 87 - 90 (2017)

The preparation of all possible stereoisomers of a given chiral molecule bearing multiple stereocenters by a simple and unified method is a significant challenge in asymmetric catalysis. We report stereodivergent allylic substitutions with aryl acetic acid esters catalyzed synergistically by a metallacyclic iridium complex and benzotetramisole. Through permutations of the enantiomers of the two chiral catalysts, all four stereoisomers of the products bearing two adjacent stereocenters are accessible with high diastereoselectivity and enantioselectivity. The resulting chiral activated ester products can be converted readily to enantioenriched amides, unactivated esters, and carboxylic acids in a onepot manner.

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