Nitrones and oxazirans. II. Formation of 2,2'-bipyrrolidinyls by reductive dimerization processes

Abstract

The reduction of some y-nitro aryl ketones, 1-pyrroline 1-oxides, or 1-pyrrolines with zinc in aqueous ammonium chloride at room temperature results in the formation of 2,2'-bipyrrolidinyl compounds. These can also be obtained by reductive dimerization of 1-pyrrolines with aluminium amalgam in moist ether.