Process for the preparation of chlorinated 4,5-difluorobenzoic a

Details Process for the preparation of chlorinated 4,5-difluorobenzoic a Process for the preparation of chlorinated 4,5-difluorobenzoic a

1994-01-27

1995-12-05

Brust, Joseph Paul

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

Organic compounds

Nitriles

562861, 562862, 562863, 562864, 562493, 564183, C07C25330, C07C 51363, C07C 5160

Patent

active

054730953

ABSTRACT:
The present invention relates to a process for the preparation of compounds of the formula ##STR1## in which R.sup.1 is --CN, --COOH, --COOR', R' being an organic radical having 1 to 6 carbon atoms, --CONH.sub.2, --COCl or --CHO and R.sup.2 is H or Cl, which comprises reacting a compound of the formula ##STR2## in which R.sup.1 is as defined above and R.sup.3 is H or Cl, with a chlorinating agent in the presence of a chlorination catalyst at -10.degree. to 200.degree. C.

REFERENCES:
patent: 5021605 (1991-06-01), Kobayashi et al.
patent: 5187295 (1993-02-01), Schach
patent: 5214187 (1993-05-01), Wolf et al.
Patent Abstracts of Japan, vol. 14, No. 356, Aug. 2, 1990.

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