Process for the preparation of 1,2-dioximes

Details Process for the preparation of 1,2-dioximes Process for the preparation of 1,2-dioximes

1979-03-07

1980-12-23

Evans, Joseph E.

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

Organic compounds

Amino nitrogen containing

423DIG14, 260439R, C07C13100

Patent

active

042409810

ABSTRACT:
The invention relates to a process for the preparation of a 1,2-dioxime of the general formula A--C(.dbd.NOH)--C(.dbd.NOH)--R, wherein A represents an aromatic group and R a hydrocarbyl group or a hydrogen atom, which process comprises the reaction of hydroxylamine with one or more hydroxyiminoketones of formula A--C(.dbd.O)--C(.dbd.NOH)--R or of formula A--C(.dbd.NOH)--C(.dbd.NOH)--R in the presence of a nickel compound forming a complex with the 1,2-dioxime.

REFERENCES:
patent: 3462488 (1969-08-01), McBee et al.
patent: 3579556 (1971-05-01), Briggs et al.
patent: 3703573 (1972-11-01), Blytas
patent: 3725477 (1973-04-01), Olechowski
Banks, Charles V., "The Chemistry of the vic-Dioximes", Record of Chemical Progress, vol. 25, No. 2 (1964) pp. 85-103.

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