Method for the preparation of azomethines

Details Method for the preparation of azomethines Method for the preparation of azomethines

1993-01-14

1994-03-29

Robinson, Allen J.

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

Organic compounds

Amino nitrogen containing

546300, 546304, 548189, 548198, 548228, 548229, 548234, 5483201, 5483265, 5483331, 5483701, 5483717, 548550, 548559, 548560, 549 65, 549 68, 549480, 549491, 564276, 564277, C07C24902

Patent

active

052986594

ABSTRACT:
Azomethines can be prepared by the condensation of cycloalkanones and anilines in the presence of acid homogeneous catalysts while the water of reaction is removed azeotropically, the condensation being carried out in a continuous reaction in a column-like reactor to which a temperature profile is applied, the starting materials being fed in in the low-temperature region, and, of the reaction products, the water of reaction to be removed azeotropically being discharged also in the low-temperature region and the azomethine produced being discharged in the high-temperature region.

REFERENCES:
patent: 2268418 (1941-12-01), Paul
patent: 2336215 (1943-12-01), Bean
patent: 4045486 (1977-08-01), Krall et al.
patent: 4281195 (1981-07-01), George
Berichte Der Deutschen Chemischen Gesellschaft; pp. 344-355, 53, (1920).

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