An improved procedure has been developed for photodehydrocyclization of stilbenes for the synthesis of phenanthrenes and helicenes.This procedure involves the use of THF as a scavenger of hydriodic acid produced during iodine mediated photodehydrocyclization.The use of THF is advantageous due to its higher boiling point, lower cost and easy availability as compared to propylene oxide.The method is applied to synthesize a number of phenanthrenes and helicenes.
No takes yet. Share an insight, caveat, or question.
Talele et al. (2011) studied this question.