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889765-38-2

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889765-38-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 889765-38-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,9,7,6 and 5 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 889765-38:
(8*8)+(7*8)+(6*9)+(5*7)+(4*6)+(3*5)+(2*3)+(1*8)=262
262 % 10 = 2
So 889765-38-2 is a valid CAS Registry Number.

889765-38-2Downstream Products

889765-38-2Relevant articles and documents

Design and synthesis of new bidentate alkoxy-NHC ligands for enantioselective copper-catalyzed conjugate addition

Clavier, Hervé,Coutable, Ludovic,Toupet, Lo?c,Guillemin, Jean-Claude,Mauduit, Marc

, p. 5237 - 5254 (2007/10/03)

A new family of chiral alkoxy-N-heterocyclic carbene (NHC) ligands has been designed for the enantioselective copper-catalyzed conjugate addition of dialkylzincs to enones. These new bidentate NHC ligands were synthesized in high overall yields using a five-step procedure starting from commercially available β-aminoalcohols. Influence of the temperature, base, solvent and copper source were studied in order to optimize the stereoselectivity of the addition. High reactivity and excellent enantioselectivity were obtained at ambient temperature with a range of cyclic enones and dialkylzinc. Addition to acyclic enones has also been studied.

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