Ms. Gulzar et al., ENANTIOSPECIFIC CONJUGATE ADDITION OF N-NUCLEOPHILES TO SUBSTITUTED FUMARIC ACIDS USING METHYLASPARTASE, Journal of the Chemical Society, Chemical Communications, (13), 1994, pp. 1601-1602
In addition to ammonia, 3-methylaspartase is able to catalyse the conj
ugate addition of hydrazine, hydroxylamine, methoxylamine and alkylami
nes to various alkyl- and halogenofumaric acids to give single enantio
mers of the corresponding N-substituted aspartic acids.