Moderated reduction reactions for producing arylhydroxylamines

Details Moderated reduction reactions for producing arylhydroxylamines Moderated reduction reactions for producing arylhydroxylamines

1985-08-05

1988-02-02

Hines, Robert V.

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

Organic compounds

Carboxylic acid esters

560 20, 564300, 564418, 564423, C07C 8300, C07C10100

Patent

active

047230304

ABSTRACT:
A method is provided for enhancing the production rate of arylhydroxylamines by moderated catalytic hydrogenation reactions. Small quantities of acid introduced to the reaction medium doubles the hydrogenation rate of nitroaromatic compounds without a significant loss in selectivity to arylhydroxylamines.

REFERENCES:
patent: 3694509 (1972-09-01), Rylander et al.
patent: 3715397 (1973-02-01), Rylander et al.
patent: 3927101 (1975-12-01), Ludec
patent: 3992395 (1976-11-01), Ludec
patent: 4571437 (1986-02-01), Caskey et al.
Makaryan et al., Izvestiva Akademii Nauk SSSR, No. 4, pp. 750-764 (Apr. 1983), original article submitted Mar. 17, 1982.

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