Process for the preparation of 5-alkoxy-2-nitroso phenols

Details Process for the preparation of 5-alkoxy-2-nitroso phenols Process for the preparation of 5-alkoxy-2-nitroso phenols

1992-07-13

1993-10-05

Cintins, Marianne M.

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

Organic compounds

Oxygen containing

568586, 568 30, 558389, 560 61, C07C 4118, C07C20100, C07C31504, C07C 67313

Patent

active

052507416

ABSTRACT:
Disclosed is a process for the preparation of 5-alkoxy-2-nitrosophenols by the nitrosation of 3-alkoxyphenols using an alkali metal nitrite and an alkanoic acid wherein the selectivity of the nitrosation is improved. Also disclosed is a 2-step process for the preparation of 5-alkoxy-2-nitrophenols by oxidizing the 5-alkoxy-2-nitrosophenols obtained in accordance with the present invention.

REFERENCES:
patent: 3683034 (1972-09-01), Doering et al.
patent: 3933926 (1976-01-01), Salter et al.
patent: 4242277 (1980-12-01), Tanaka et al.
J. D. Richey et al., Agr. Biol. Chem., 39, 683 (1979).
E. H. Allen et al., J. Org. Chem., 36, 2004 (1971).
J. Jahelka et al., Collection Czechoslov. Chem. Commun., 38, 877 (1973).
H. H. Hodgson et al., J. Chem. Soc., 2775 (1929).

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