First Michael Addition Reaction of α-Substituted N-Diphenylmethyleneglycinate with Ethyl Propiolate. Synthesis of α-Substituted (E)-3,4-Dehydroglutamic Acids
First Michael Addition Reaction of α-Substituted N-Diphenylmethyleneglycinate with Ethyl Propiolate. Synthesis of α-Substituted (E)-3,4-Dehydroglutamic Acids