Herbicidal compositions based on N-(4-fluoro-phenyl)-N-isopropyl

Details Herbicidal compositions based on N-(4-fluoro-phenyl)-N-isopropyl Herbicidal compositions based on N-(4-fluoro-phenyl)-N-isopropyl

1997-01-30

1998-11-03

Robinson, Allen J.

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

Organic compounds

Amino nitrogen containing

564214, C07C23100, C07C23300

Patent

active

058311262

ABSTRACT:
The invention relates to the use of the compound N-(4-fluoro-phenyl)-N-isopropyl-chloroacetamide of the formula (I) ##STR1## which is known, as active compound in selective herbicidal compositions, for example for combating weeds in maize cultures, and to a new process for the preparation of this active compound.
The compound (I) is obtained in very high yields by reacting N-isopropyl-4-fluoro-aniline with approximately equimolar amounts of chloroacetyl chloride at temperatures between 20.degree. and 150.degree. C. in the presence of an inert diluent, such as, for example, toluene, without addition of an acid binder.

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patent: 4140774 (1979-02-01), Salbeck et al.
patent: 4418021 (1983-11-01), Patel
patent: 4453965 (1984-06-01), Patel
E. Muller, "Methoden der Organischen Chemie", vol.XI/2, p. 13, Georg Thieme Verlag, Stuttgart, (1958).
Chemical Abstracts of Japan, Vo. 12, No. 365, abstract of JP 63-119,447, (1988).
Oyama et al, C.A., Vo. 109, (1988) 109:210673s.

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