Method for production of maleimides

Details Method for production of maleimides Method for production of maleimides

1986-10-27

1988-11-22

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548545, 548546, 548547, 548549, C07D207448, C07D207452

Patent

active

047867388

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. 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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