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1287795-39-4

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1287795-39-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1287795-39-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,7,7,9 and 5 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1287795-39:
(9*1)+(8*2)+(7*8)+(6*7)+(5*7)+(4*9)+(3*5)+(2*3)+(1*9)=224
224 % 10 = 4
So 1287795-39-4 is a valid CAS Registry Number.

1287795-39-4Downstream Products

1287795-39-4Relevant articles and documents

Asymmetric organocatalytic tandem cyclization/transfer hydrogenation: A synthetic strategy for enantioenriched nitrogen heterocycles

Shi, Feng,Tan, Wei,Zhang, Hong-Hao,Li, Mei,Ye, Qin,Ma, Guan-Hua,Tu, Shu-Jiang,Li, Guigen

, p. 3715 - 3726 (2014/01/06)

An asymmetric organocatalytic tandem reaction comprising cyclization/transfer hydrogenation has been established in a compatible and synergistic way, leading to the step-economical synthesis of enantioenriched tetrahydroquinoxalines and dihydroquinoxalinones from readily accessible materials in excellent enantioselectivity of up to >99% ee. This protocol of a one-operation tandem reaction combines the merits of both tandem reactions and asymmetric organocatalysis, providing an efficient strategy for concisely and enantioselectively synthesizing nitrogen heterocycles with biological relevance. Copyright

Convergent asymmetric disproportionation reactions: Metal/Bronsted acid relay catalysis for enantioselective reduction of quinoxalines

Chen, Qing-An,Wang, Duo-Sheng,Zhou, Yong-Gui,Duan, Ying,Fan, Hong-Jun,Yang, Yan,Zhang, Zhang

supporting information; experimental part, p. 6126 - 6129 (2011/06/22)

A convergent asymmetric disproportionation of dihydroquinoxalines for the synthesis of chiral tetrahydroquinoxalines using a metal/Bronsted acid relay catalysis system has been developed. The use of hydrogen gas as the reductant makes the convergent dispr

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