Synthesis of azuleno[2,1-<i>b</i>]thiophenes by cycloaddition of azulenylalkynes with elemental sulfur and their structural, optical and electrochemical properties

Abstract

The reaction of several azulenylalkynes having an aryl substituent with elemental sulfur afforded the corresponding azuleno[2,1-<italic>b</italic>]thiophenes in good yields.