A Facile, Simple and Convenient Method for the Synthesis of 14-Alkyl or Aryl-14-<i>H</i>-Dibenzo[<i>a</i>,<i>j</i>]xanthenes Catalyzed by <i>p</i>TSA in Solution and Solvent-Free Conditions

Abstract

An efficient and straightforward procedure for the synthesis of 14-alkyl or aryl-14-H-dibenzo[a,j]xanthenes has been achieved through the one-pot condensation of β-naphthol with alkyl or aryl aldehydes in the presence of p-toluene sulfonic acid as catalyst under two conditions: organic solvent and solvent-free media.