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1034835-89-6

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1034835-89-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1034835-89-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,4,8,3 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1034835-89:
(9*1)+(8*0)+(7*3)+(6*4)+(5*8)+(4*3)+(3*5)+(2*8)+(1*9)=146
146 % 10 = 6
So 1034835-89-6 is a valid CAS Registry Number.

1034835-89-6Downstream Products

1034835-89-6Relevant articles and documents

Asymmetric Syn-selective Henry reaction catalyzed by the sulfonyldiamine-CuCl-pyridine system

Arai, Takayoshi,Takashita, Ryuta,Endo, Yoko,Watanabe, Masahiko,Yanagisawa, Akira

, p. 4903 - 4906 (2008/12/20)

(Chemical Equation Presented) A catalytic asymmetric Henry reaction has been developed with use of a sulfonyldiamine-CuCl complex as a catalyst. A series of new binaphthyl-containing sulfonyldiamine ligands (2a-h) were readily synthesized in two steps starting from commercially available chiral 1,2-diamines. The (R,R)-diamine-(R)-binaphthyl ligand (2d)-CuCl complex smoothly catalyzed the enantioselective Henry reaction with the assistance of pyridine to give the corresponding adduct with high enantiomeric excess (up to 93%). Moreover, the 2d-CuCl-pyridine system promotes the diastereoselective Henry reaction in syn-selective manner to give the adduct in up to 99% yield with 92:8 synlanti selectivity. The enantiomeric excess of the syn-adduct was 84% ee.

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