Continuous preparation of phthalimide

Details Continuous preparation of phthalimide Continuous preparation of phthalimide

1981-06-29

1983-12-06

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20948

Patent

active

044195192

ABSTRACT:
A process for the continuous preparation of phthalimide by reacting phthalic anhydride with ammonia in about the stoichiometric ratio, in a mixing apparatus and subsequently in a reaction tube at a particular flow velocity and a particular temperature.
The phthalimide obtainable by the process of the invention is a valuable starting material for the preparation of dyes, pesticides and pigments, especially copper phthalocyanines.

REFERENCES:
patent: B486678 (1976-03-01), Hetzel et al.
patent: 1966068 (1934-07-01), Jaeger et al.
patent: 2566992 (1951-09-01), Morgan et al.
patent: 2668326 (1954-02-01), Schlaudocker
patent: 4001273 (1977-01-01), Hetzel et al.
Ullmans Encyklopadie der Technischen Chemie, vol. 13, p. 735.

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