Fluorination process

Details Fluorination process Fluorination process

1976-05-12

1977-09-27

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260456P, 260465R, 260465G, 260558D, 260599, 260515A, 260505R, 260591, 260592, 260646, 260556AR, 560 8, 560 51, C07C14324, C07C 1714

Patent

active

040511685

ABSTRACT:
Aromatic compounds containing an .alpha.-fluoroalkyl or .alpha.,.alpha.-difluoroalkyl side chain are prepared by reacting selected aromatic compounds with a mixture of HF and a metal oxide which is PbO.sub.2 or NiO.sub.2 at -30.degree. to +80.degree. C. Exemplary is the conversion of 4-nitrotoluene to 4-(fluoromethyl)nitrobenzene and 4-(difluoromethyl)nitrobenzene.

REFERENCES:
patent: 2436143 (1948-02-01), Hoehn
patent: 2466189 (1949-04-01), Waalkes
patent: 3214482 (1965-10-01), Caropreso et al.
patent: 3379780 (1968-04-01), Robinson
Henne et al., J.A.C.S., vol. 67, pp. 1639-1640 (1945).

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