Process for the preparation of chlorinated phenylhydroxylamines

Details Process for the preparation of chlorinated phenylhydroxylamines Process for the preparation of chlorinated phenylhydroxylamines

1974-11-25

1976-11-16

Rizzo, Nicholas S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260307C, 260580, 424272, C07D27110

Patent

active

039923959

ABSTRACT:
Chlorinated phenylhydroxylamines of the formula: ##SPC1##
(wherein one of X.sub.1 and X.sub.2 represents chlorine and the other represents hydroxylamino, and Y represents chlorine or a 2-alkyl-1,3,4-oxadiazolin-5-one group attached through the 4-position nitrogen atom) are prepared by the hydrogenation, in the presence of a catalyst based on a metal selected from platinum, palladium, rhodium, ruthenium and nickel, of a nitrophenyl compound of the formula: ##SPC2##
(wherein one of X and X' represents chlorine and the other represents nitro, and Y is as hereinbefore defined) and in the presence of a nitrogen-containing organic base, the ratio by weight of the organic base to the nitrophenyl compound being greater than 0.1. The products are inter alia useful as intermediates for the preparation of herbicides.

REFERENCES:
patent: 3413349 (1968-11-01), Bertsch et al.
patent: 3694509 (1972-09-01), Rylander et al.
patent: 3941798 (1976-03-01), Fort et al.

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