Stereospecific alkylation of the Schiff base ester of alanine with 2-substituted-(E)- and -(Z)-vinyl bromides. An efficient synthesis of 2-methyl-(E)-3,4-didehydroglutamic acid, a potent substrate-induced irreversible inhibitor of L-glutamate-1-decarboxylase
First Michael Addition Reaction of α-Substituted N-Diphenylmethyleneglycinate with Ethyl Propiolate. Synthesis of α-Substituted (E)-3,4-Dehydroglutamic Acids