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Difluoromethylation of Amines with Zn(CF3)Br · 2 CH3CN, Cd(CF3)2 · 2 CH3CN and the System Bi(CF3)3/AlCl3

✍ Scribed by S. V. Pasenok; N. V. Kirij; Yu. L. Yagupolskii; D. Naumann; W. Tyrra; A. Fitzner

Publisher
John Wiley and Sons
Year
1999
Tongue
German
Weight
93 KB
Volume
625
Category
Article
ISSN
0372-7874

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✦ Synopsis

The reactions of Zn(CF 3 )Br ´2 CH 3 CN, Cd(CF 3 ) 2 ´2 CH 3 CN or Bi(CF 3 ) 3 /AlCl 3 with tertiary amines lead to the formation of quaternary ammonium salts of the general formula [R 3 NCF 2 H]X. The reaction of 4-N,N-dimethylaminopyridine with Zn(CF 3 )Br ´2 CH 3 CN yields (Ndifluoromethyl)-4-N,N-dimethylaminopyridinium bromide.

Bi(CF 3 ) 3 /AlCl 3 reacts with 1,4-diazabicyclo[2.2.2]octane to form a mixture of mono-and bis(difluoromethylammonium) salts.

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