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1186139-51-4

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1186139-51-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1186139-51-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,6,1,3 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1186139-51:
(9*1)+(8*1)+(7*8)+(6*6)+(5*1)+(4*3)+(3*9)+(2*5)+(1*1)=164
164 % 10 = 4
So 1186139-51-4 is a valid CAS Registry Number.

1186139-51-4Relevant articles and documents

Synthesis of Diastereoenriched α-Aminomethyl Enaminones via a Br?nsted Acid-Catalyzed Asymmetric aza-Baylis-Hillman Reaction of Chiral N-Phosphonyl Imines

Liu, Yangxue,Ahmed, Sultan,Qin, Xiao-Yan,Rouh, Hossein,Wu, Guanzhao,Li, Guigen,Jiang, Bo

, p. 1125 - 1131 (2020/03/19)

An effective chiral GAP methodology for preparing α-aminomethyl enaminones through a (R)-CSA-catalyzed asymmetric aza-Baylis-Hillman reaction is reported. Excellent yields and high diastereoselectivity could be obtained under mild conditions and convenient GAP techniques. The confirmations of the absolute configuration of N-phosphonyl imine and chiral enaminone by X-ray diffraction provides an explicit explanation of the chirality mechanism for GAP chemistry.

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