Process for the preparation of azomethines

Details Process for the preparation of azomethines Process for the preparation of azomethines

1993-05-03

1994-03-08

Robinson, Allen J.

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

Organic compounds

Amino nitrogen containing

564271, 564276, C07C24902

Patent

active

052929531

ABSTRACT:
Azomethines can be prepared by the condensation of cycloalkanones and anilines in the presence of acid heterogeneous catalysts, with azeotropic removal of the water of reaction, the condensation being carried out in a continuous reaction in a column-like reactor having an applied temperature profile, and the starting materials being fed in the low-temperature zone and, of the reaction products, the water of reaction to be removed as an azeotrope also being removed in the low-temperature zone and the azomethine formed being removed in the high-temperature zone.

REFERENCES:
patent: 2336215 (1943-12-01), Bean
patent: 4045486 (1977-08-01), Krall et al.
patent: 4281195 (1981-07-01), George

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