Aqueous reduction process for halo-nitro-phenols

Details Aqueous reduction process for halo-nitro-phenols Aqueous reduction process for halo-nitro-phenols

1989-07-28

1991-03-19

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

564417, 564420, C07C20936, C07C20974

Patent

active

050012657

ABSTRACT:
An aminophenolic compound can be synthesized by contacting a halo-nitro-phenolic compound, such as 2-chloro-4,6-dinitrorescorcinol, with a hydrogenating agent, such as hydrogen, and a catalyst, such as palladium-on-carbon, in an aqueous solution in the presence of an acid such as phosphoric acid.

REFERENCES:
patent: 3079435 (1963-02-01), Freifelder et al.
patent: 3666813 (1972-05-01), Hindin et al.
patent: 4020107 (1977-04-01), Kosak
patent: 4329503 (1982-05-01), Bauer et al.
patent: 4766244 (1988-08-01), Lysenko
patent: 4885389 (1989-12-01), Lee et al.
G. M. Loudon, Organic Chemistry 1197-98 (Addison-Wesley Publ. Co. 1984); R. T. Morison et al. Organic Chemistry-3rd ed., 737-38 (Allyn & Bacon 1973).

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