Investigation of a green oligomer of an indolizine

Abstract

An indolizine-based oligomer was synthesized by stirring a solution of 1-(α-alkoxybenzyl)-indolizine derivative in chloroform at room temperature. The oligomer was characterized as an octamer; it was the main component in the obtained mixture of oligomers. The oligomerization was accelerated by both acid and light. The green color of the oligomer under acidic conditions turned yellowish brown under basic conditions; this color change could be repeated by changing the acidic/basic conditions.