Process for the production of bismaleinimide derivatives
US5286874A · kind A · utility
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Key dates
| Filing date | Nov 24, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/452
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of bismaleinimide derivatives of the formula: ##STR1## In the first step, maleic acid anhydride of the formula: ##STR2## is converted with a methyl-bis-aniline of the formula: ##STR3## in an unhalogenated aromatic hydrocarbon as the solvent, into the corresponding amide acid. In the second step, the amide acid is converted, without isolation, in the presence of an acid catalyst, into the end product of the formula I.
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