Distillation process for the isolation of 1,1-difluoro(mono- or

Details Distillation process for the isolation of 1,1-difluoro(mono- or Distillation process for the isolation of 1,1-difluoro(mono- or

1985-07-19

1987-02-03

Terapane, John F.

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

Organic compounds

Amino nitrogen containing

564442, 568655, C07C 9314, C07C 43225, C07C 4142

Patent

active

H00002143

ABSTRACT:
Substituted 1,1-difluoro(mono- or dihalo)ethoxybenzeneamines prepared by the reaction of a 1,1-difluoro(mono- or dihalo)ethylene and a substituted hydroxybenzeneamine in the presence of an alkali or alkaline earth metal hydroxide and a polar, aprotic solvent are isolated from the reaction mixture by a two stage distillation without prior dilution with water or other means of removal or neutralization of the alkali or alkaline earth metal hydroxides present. The products are useful intermediates in the preparation of insecticides and herbicides.

REFERENCES:
patent: 3277068 (1966-10-01), Wall et al.
patent: 3926989 (1975-12-01), Rebsdat et al.
patent: 4423249 (1983-12-01), Carl et al.
"The Merck Index" ed. Windholz, M., 10th ed. 1983, pp. 679, 1067, 7093.
Sax, N. I. Dangerous Properties of Industrial Materials, 6th ed., pp. 280-282, 360-362 and 2162.

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