Processes for producing 5-fluorobenzoic acids and their intermed

Details Processes for producing 5-fluorobenzoic acids and their intermed Processes for producing 5-fluorobenzoic acids and their intermed

1993-05-04

1994-07-26

Killos, Paul J.

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

Organic compounds

Nitriles

570127, C07C25300, C07C 1908

Patent

active

053328515

ABSTRACT:
A process for producing a 5-fluorobenzoic acid of the formula (V), which comprises trichloromethylating a fluorobenzene of the formula (I) to obtain a 5-fluorobenzotrichloride of the formula (II), then reacting it with aqueous ammonia to obtain a 5-fluorobenzonitrile of the formula (III), reacting it with a fluorinating agent to obtain a 5-fluorobenzonitrile of the formula (IV) and hydrolyzing it: ##STR1## wherein each of X.sub.1, X.sub.3, Y.sub.1 and Y.sub.3 is a halogen atom, and each of X.sub.2 and Y.sub.2 is hydrogen or a halogen atom.

REFERENCES:
Chemical Abstracts 95(5):43172m 1980.
Chemical Abstracts 104(19):168196h 1985.
Chemical Abstracts 108(3):214052 1986.
Chemical Abstracts 111(16):136429g 1989.
Chemical Abstracts 99(7):53378e 1983.
Chemical Abstracts 113(9):77918q 1989.

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