Process for the production of 5-nitro-1,4-naphthoquinone

Details Process for the production of 5-nitro-1,4-naphthoquinone Process for the production of 5-nitro-1,4-naphthoquinone

1974-11-27

1976-01-06

Garner, Vivian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260575, C07C 7602

Patent

active

039312550

ABSTRACT:
5-Nitro-1,4-naphthoquinone is prepared by reducing 8-nitro-1,4-naphthoquinone-1-oxime and/or 5-nitro-1,4-naphthoquinone-1-oxime in an aqueous and/or organic reaction medium in the presence of iron (II) ions and a hydrogen halide at a temperature in the range of from -20.degree. to 100.degree.C, and thereafter oxidizing the 8- and and/or 5-nitro-4-amino-1-naphthol formed, or the corresponding salt, optionally without intermediate isolation, at a temperature in the range of from -10.degree. to 100.degree.C to form the desired 5-nitro-1,4-naphthoquinone.

REFERENCES:
migridichian, Org. Syn., 1957, p. 1426.

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