10.1016/j.tet.2007.03.116
The research focuses on the novel synthesis of 2-aminopentanedinitriles from 2-(bromomethyl)aziridines and their subsequent transformation into 2-imino-5-methoxypyrrolidines and 5-methoxypyrrolidin-2-ones. The study explores an unprecedented reaction mechanism involving base-induced ring opening of intermediate 2-(cyanomethyl)aziridines into allylamines, followed by migration of the double bond towards aldimines via enamine intermediates. The synthesized aminopentanedinitriles serve as precursors for the preparation of glutamic acid derivatives, which are significant in the central nervous system as excitatory neurotransmitters. The experiments utilized reactants such as 1-arylmethyl-2-(bromomethyl)aziridines, potassium cyanide in DMSO, and sodium methoxide in methanol. The analyses included column chromatography for purification, and various spectroscopic techniques such as NMR, IR, and MS for structural characterization and confirmation of the synthesized compounds.