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The Reactions of Zn(CF3)Br · 2 CH3CN with Phenol, Pentafluorophenol, their Potassium and Ammonium Salts

✍ Scribed by Sergej V. Pasenok; Yurii L. Yagupolskii; Wieland Tyrra; Dieter Naumann


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

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✦ Synopsis


Triphenoxymethane, tris(pentafluorophenoxy)methane, phenyl(difluoromethyl)ethers, and tetrakis(pentafluorophenoxy)ethene were prepared via carbenoid reactions of Zn(CF 3 )Br ´2 CH 3 CN and the corresponding phenol or the potassium or ammonium salts in the presence of the auxiliary acid BF 3 ´O(CH 3 ) 2 . The products were identified by their melting and boiling points and in part by their NMR and mass spectra as well as elemental analysis.


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Difluoromethylation of Amines with Zn(CF
✍ S. V. Pasenok; N. V. Kirij; Yu. L. Yagupolskii; D. Naumann; W. Tyrra; A. Fitzner 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 German ⚖ 93 KB 👁 1 views

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