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1251957-52-4

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1251957-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1251957-52-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,1,9,5 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1251957-52:
(9*1)+(8*2)+(7*5)+(6*1)+(5*9)+(4*5)+(3*7)+(2*5)+(1*2)=164
164 % 10 = 4
So 1251957-52-4 is a valid CAS Registry Number.

1251957-52-4Downstream Products

1251957-52-4Relevant articles and documents

Preparation of quarternary ammonium salt-tagged ferrocenylphosphine-imine ligands and their application to palladium-catalyzed asymmetric allylic substitution

Yuan, Hao,Zhou, Zhiming,Xiao, Jiangliang,Liang, Lixuan,Dai, Li

experimental part, p. 1874 - 1884 (2010/11/16)

A series of novel quarternary ammonium salt-modified chiral ferrocenylphosphine-imine ligands have been synthesized and the molecular structure of BIT5 has been determined by single-crystal X-ray diffraction. The applicability of these ligands in asymmetric C*C and C*N bond formation was demonstrated. High enantioselectivity was obtained in the Pd-catalyzed asymmetric substitution of 1,3-diphenyl- 2-propenyl acetate, with dimethyl malonate (up to 94.6% ee) and benzylamine (up to 92.6% ee).

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