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1311205-16-9

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1311205-16-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1311205-16-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,1,1,2,0 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1311205-16:
(9*1)+(8*3)+(7*1)+(6*1)+(5*2)+(4*0)+(3*5)+(2*1)+(1*6)=79
79 % 10 = 9
So 1311205-16-9 is a valid CAS Registry Number.

1311205-16-9Downstream Products

1311205-16-9Relevant articles and documents

Copper-catalyzed direct C-H oxidative trifluoromethylation of heteroarenes

Chu, Lingling,Qing, Feng-Ling

, p. 1298 - 1304 (2012)

This article describes the copper-catalyzed oxidative trifluoromethylation of heteroarenes and highly electron-deficient arenes with CF 3SiMe3 through direct C-H activation. In the presence of catalyst Cu(OAc)2, ligand 1,10-phenanthroline and cobases tert-BuONa/NaOAc, oxidative trifluoromethylation of 1,3,4-oxadiazoles with CF3SiMe3 proceeded smoothly using either air or di-tert-butyl peroxide as an oxidant to give the corresponding trifluoromethylated 1,3,4-oxadiazoles in high yields. Di-tert-butyl peroxide was chosen as the suitable oxidant for oxidative trifluoromethylation of 1,3-azoles and perfluoroarenes. Cu(OH)2 and Ag2CO3 were the best catalyst and oxidant for direct oxidative trifluoromethyaltion of indoles. The optimum reaction conditions enable oxidative trifluoromethylation of a range of heteroarenes that bear numerous functional groups. The prepared trifluoromethylated heteroarenes are of importance in the areas of pharmaceuticals and agrochemicals. The preliminary mechanistic studies of these oxidative trifluoromethylations are also reported.

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