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149195-56-2

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149195-56-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149195-56-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,1,9 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 149195-56:
(8*1)+(7*4)+(6*9)+(5*1)+(4*9)+(3*5)+(2*5)+(1*6)=162
162 % 10 = 2
So 149195-56-2 is a valid CAS Registry Number.

149195-56-2Relevant articles and documents

Asymmetric Synthesis of Hydroquinazolines Bearing C4-Tetrasubstituted Stereocenters via Kinetic Resolution of α-Tertiary Amines

Jiang, Qianwen,Qin, Tianren,Yang, Xiaoyu

, p. 625 - 630 (2022/01/20)

A novel protocol for asymmetric synthesis of hydroquinazolines bearing C4-tetrasubstituted stereocenters has been achieved through kinetic resolution of 2-amido α-tertiary benzylamines via chiral phosphoric acid catalyzed intramolecular dehydrative cyclizations. This method gave access to both α-tertiary benzylamines and hydroquinazolines with broad scope and high enantioselectivities. An intriguing restricted rotation of the C-N bond was observed for hydroquinazoline products bearing C4-tetrasubstituted stereocenters.

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