Process for the manufacture of acetoacetyl-aminobenzenes

Details Process for the manufacture of acetoacetyl-aminobenzenes Process for the manufacture of acetoacetyl-aminobenzenes

1978-11-02

1979-10-02

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C10200

Patent

active

041698517

ABSTRACT:
The N-acetoacetylamino compounds of 2,5-dimethoxy-4-chloro-aniline, 2,4-dimethyl-aniline and 2-methyl-5-chloroaniline are obtained in a good yield and excellent purity, if the above-mentioned anilines are reacted with diketene in an inert organic solvent or diluent in the presence of from 0.1 to 6%, calculated on the weight of the aniline, of water, while adding catalytic amounts of acid. An industrial aniline quality is preferably dried by heating it with a solvent forming with water an azeotropic mixture, and thereafter the amount of water required is added. The products may be used without purification as coupling components for the preparation of pigments.

REFERENCES:
patent: 2542565 (1951-02-01), Parker
patent: 2714117 (1955-07-01), Lacey
patent: 3121743 (1964-02-01), Branch
patent: 3304328 (1967-02-01), Pelley
patent: 3778474 (1973-12-01), Stocker
patent: 4042622 (1977-08-01), Casithory et al.

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