Process for the preparation of 5-amino-2,4-dimethylacetanilide

Details Process for the preparation of 5-amino-2,4-dimethylacetanilide Process for the preparation of 5-amino-2,4-dimethylacetanilide

1983-07-25

1985-09-10

Hines, Robert V.

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

Organic compounds

Amino nitrogen containing

564146, 564219, 564414, 564419, 564422, 564437, 564441, C07C10200

Patent

active

045408173

ABSTRACT:
A process for the preparation of 5-amino-2,4-dimethylacetanilide by reduction of 5-nitro-2,4-dimethylacetanilide with hydrogen is disclosed characterized in that a crude mixture containing 5-nitro-2,4-dimethylacetanilide in admixture with at least one of its position isomers is hydrogenated in a water-miscible organic solvent which optionally contains water. The 5-amino-2,4-dimethylacetanilide is separated off from the reaction mixture by means of crystallization employing a mixture of water-miscible organic solvent and water.

REFERENCES:
patent: 1920828 (1933-08-01), Wyler
patent: 2933503 (1960-04-01), Clark et al.
patent: 3149162 (1964-09-01), Gardner et al.
patent: 3654363 (1972-04-01), Pum et al.
patent: 4009205 (1977-02-01), Kimura et al.
patent: 4341902 (1982-07-01), Thiem et al.
Beilsteine, "Handbuch der Organischen Chem.", vol. XII, pp. 1127-1129, (1929).

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