A Synthesis of Dibenzo (a, h) quinolizidine System by way of Immonium Salt Intermediate

Abstract

A mixture of 3, 4-dihydroisoquinoline derivative and 3, 4-dimethoxyphenethyl bromide afforded dibenzo (a, h) quinolizidine derivative in one step by heating. This cyclization was interpreted in terms of electrophilic reactivity of immonium salt intermediate.