Preparation of N,N'-dialkylphenylenediamines

Details Preparation of N,N'-dialkylphenylenediamines Preparation of N,N'-dialkylphenylenediamines

1977-10-25

1979-02-20

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260577, 260689, C07C 8508, C07C 8511

Patent

active

041407180

ABSTRACT:
N,N'-dialkylphenylenediamines are prepared by the reductive alkylation of a nitroaniline and a ketone in the presence of hydrogen and a hydrogenation catalyst. The desired product may be obtained in a more economical way when effecting the process in a continuous manner by utilizing an organic solvent comprising an ether compound such as a monoether of a dihydric alcohol, a diether of a dihydric alcohol, or a cyclic diether.

REFERENCES:
patent: 2969394 (1961-01-01), Chenicek
patent: 3336386 (1967-08-01), Dovell et al.
patent: 3509213 (1970-04-01), Greenfield et al.
patent: 3522309 (1970-07-01), Kirby
patent: 3978040 (1976-08-01), Gottschlich et al.
patent: 4009205 (1977-02-01), Kimura et al.
CRC, "Handbook of Chemistry and Physics", 52nd Edition, p. C-111, 1971-1972.

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