Process for the selective reduction of the 4-halogen in 2,4-diha

Details Process for the selective reduction of the 4-halogen in 2,4-diha Process for the selective reduction of the 4-halogen in 2,4-diha

1991-04-04

1992-02-18

Gray, Bruce

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

Organic compounds

Carboxylic acid esters

562456, 564412, C07C22900

Patent

active

050896539

ABSTRACT:
Substituted 2-haloanilines are prepared from the correspondingly substituted 2,4-dichloro- or 2,4-dibromoanilines by selectively reducing a chloro or bromo substituent para to a protected amino group in the presence of the same halogen as an ortho substituent. The selective reductions are accomplished by protecting the amino function of the aniline with two protecting groups, e.g., as the diacetanilide or the succinimide.

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Chemical Abstracts, vol. 86, No. 191271x, (1977).

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