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39911-73-4

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39911-73-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39911-73-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,9,1 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 39911-73:
(7*3)+(6*9)+(5*9)+(4*1)+(3*1)+(2*7)+(1*3)=144
144 % 10 = 4
So 39911-73-4 is a valid CAS Registry Number.

39911-73-4Relevant articles and documents

Iridium-Catalyzed Asymmetric Hydrogenation of α-Fluoro Ketones via a Dynamic Kinetic Resolution Strategy

Tan, Xuefeng,Wen, Jialin,Zeng, Weijun,Zhang, Xumu

supporting information, p. 7230 - 7233 (2020/10/02)

The discrimination of a fluorine atom from a hydrogen atom has been challenging in asymmetric catalysis. We herein report iridium-catalyzed hydrogenation of α-fluoro ketones using a strategy of dynamic kinetic resolution. Both enantiomeric and diastereomeric selectivities were satisfactory in the preparation of β-fluoro alcohols. The DFT calculation revealed a C-F···Na charge-dipole interaction in the transition state of hydride transfer. This noncovalent interaction would be responsible for the diastereomeric control.

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