Process for the preparation of a hydroxylamine

Details Process for the preparation of a hydroxylamine Process for the preparation of a hydroxylamine

1988-03-24

1992-11-24

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

564301, 564418, 564423, 564448, 564494, C07C23908

Patent

active

051664356

ABSTRACT:
The present invention relates to a process for the preparation of organic hydroxylamines as a result of the corresponding nitroderivative being hydrogenated in the presence of an inert solvent, a platinum catalyst, a nitrogen-containing base (in an amount of less than 10% by weight calculated on the amount of nitro derivative) and a tri- or pentavalent organic phosphorus compound. It has been found that if only use is made of the nitrogen-containing base or the phosphorus compound the yields of isolated hydroxyl amine are significantly reduced in comparison with those obtained with the present process.

REFERENCES:
patent: 3441610 (1969-04-01), Dietz et al.
patent: 3927101 (1975-12-01), Le Ludec
patent: 3992395 (1976-11-01), Ludec
Chemical Abstract No. 91: 56604W, Noncondensed Aromatics, vol. 91, 1979, p. 669.
I. D. Entwistle, et al, Rapid Catalytic Transfer Reduction of Aromatic Nitro Compounds to Hydroxylamines, Tetrahedron, vol. 34 No. 2 (1978), pp. 213-215.

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