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290366-76-6

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290366-76-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 290366-76-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,0,3,6 and 6 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 290366-76:
(8*2)+(7*9)+(6*0)+(5*3)+(4*6)+(3*6)+(2*7)+(1*6)=156
156 % 10 = 6
So 290366-76-6 is a valid CAS Registry Number.

290366-76-6Downstream Products

290366-76-6Relevant articles and documents

Asymmetric synthesis of piperidines using the nitro-Mannich reaction☆

Anderson, James C.,Bouvier-Israel, Eva,Rundell, Christopher D.,Zhang, Xiangyu

, (2020/12/21)

A method for the synthesis of functionalized piperidines containing 3 contiguous stereocentres in the 2-,3- and 4- positions uses a diastereoselective nitro-Mannich to control stereochemistry. The nitro-Mannich reaction between a β-aryl/heteroaryl substituted nitroalkanes and glyoxylate imine provides β-nitro-amines with good selectivity (70:30 to >95:5) for the syn, anti-diastereoisomers. Reductive cyclisation with BF3.OEt2 and Et3SiH gave, after purification, stereochemically pure piperidines in 19–57% yield for ten examples with different 4-aryl/heteroaryl substituents.

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