Method for production of N-phenyl and N-cyclohexyl maleimides

Details Method for production of N-phenyl and N-cyclohexyl maleimides Method for production of N-phenyl and N-cyclohexyl maleimides

1986-10-27

1988-10-25

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548549, C07D207448

Patent

active

047805463

ABSTRACT:
A method for the production of maleimides, which comprises subjecting maleinamic acids to ring-closure imidation in an organic solvent capable of forming an azeotrope with water in the presence of an acid catalyst at a temperature in the range of 120.degree. C. to 250.degree. C. while removing the formed water in the form of an azeotrope with said organic solvent and thereafter purifying the produced maleimides.

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