Epichlorohydrin → N-Glycidyl-dimethylmaleimide

Participants

Reaction Steps

30 g (0.184 mol) of potassium dimethylmaleimide are suspended in 175 g (1.89 mols) of epichlorohydrin. After adding 0.05 g of tetramethylammonium chloride, the mixture is heated, whilst stirring, and boiled under reflux for 18 hours and is then filtered. After removing the unconverted chlorohydrin by distillation under a waterpump vacuum, about 30 g of a viscous, pale brown liquid which has an epoxide content of 4.9 equivalents/kg (calculated: 5.5 equivalents/kg) remain. The NMR spectrum of the product corresponds to N-glycidyl-dimethylmaleimide of the formula ##STR30##

Provenance & Evidence