R. Besbes et al., IMPROVED SYNTHESIS AND REACTION OF DIMETHYL A-(BROMOMETHYL) FUMARATE WITH PRIMARY AMINES, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 36(1), 1997, pp. 5-8
Dimethyl alpha-(bromomethyl) fumarate (2) has been prepared in one pot
by addition of bromine to dimethyl itaconate and dehydrobromination w
ith triethylamine. The allylic bromide 2, reacts with primary amines v
ia two successive allylic substitutions and followed by lactamization
at a high temperature (above 150 degrees C) to give methoxycarbonyl-1-
N-alkyl-Delta(3)-pyrrolin-2-ones (7) in good yields.