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53911-34-5

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53911-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53911-34-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,9,1 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 53911-34:
(7*5)+(6*3)+(5*9)+(4*1)+(3*1)+(2*3)+(1*4)=115
115 % 10 = 5
So 53911-34-5 is a valid CAS Registry Number.

53911-34-5Relevant articles and documents

Metal-Free Assembly of Polysubstituted Pyridines from Oximes and Acroleins

Huang, Huawen,Cai, Jinhui,Tang, Lichang,Wang, Zilong,Li, Feifei,Deng, Guo-Jun

, p. 1499 - 1505 (2016/03/01)

Transition-metal-catalyzed synthesis of N-heterocycles from oximes has been previously well established. In this paper, for the first time a metal-free protocol with the combinational employment of iodine and triethylamine has been demonstrated to be effective to trigger the oxime-based synthesis of pyridines with high chemo-selectivity and wide functional group tolerance. A broad range of functional pyridines were prepared in moderate to excellent yields. While neither iodine nor triethylamine could trigger this transformation, mechanistic experiments indicated a radical pathway for the reaction. The resultant 2-aryl-substituted pyridines have been proved to be versatile building blocks in a range of transition-metal-catalyzed C-H functionalization reactions. (Chemical Equation Presented).

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