α-Chloro-enamines—III: Substitution and elimination reactions on α-chloroenamine-β-acid derivatives—the synthesis of an ynamine amide and an ynamine ester
Readily accessible β-chloroacyl-α-chloroenamines have two reactive Cl atoms which can be substituted successively with nucleophilic reagents. An ynamine amide and an ynamine ester have been prepared from N, N-diethylchloroacetamide via its β-chloro-β-chloroacyl-β- chloroenamine by chlorine elimination with lithium amalgam.