Method of making trifluoromethoxybenzenes

Details Method of making trifluoromethoxybenzenes Method of making trifluoromethoxybenzenes

1998-03-16

2000-09-12

Keys, Rosalynd

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4114, C07C 4122

Patent

active

061180289

ABSTRACT:
Disclosed is a process for making an .alpha.,.alpha.,.alpha.-trifluoromethoxybenzene by reacting an .alpha.,.alpha.,.alpha.-trichloromethoxybenzene or an .alpha.,.alpha.,.alpha.-tribromomethoxybenzene with gaseous hydrogen fluoride in the presence of a catalyst of antimony pentachloride, molybdenum pentachloride, molybdenum dichloride dioxide, molybdenum oxide, or a mixture thereof. The hydrogen fluoride is used in an amount of about 1 to about 1.4 times stoichiometric and is at about atmospheric pressure. The reaction is performed at about 30 to about 100.degree. C.

REFERENCES:
patent: 4620040 (1986-10-01), Alsop

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