Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (6): 982-985.DOI: 10.1016/S1872-2067(11)60393-8

• Research papers • Previous Articles     Next Articles

Mild and Highly Efficient Method for Synthesis of 14-Aryl(alkyl)- 14H-dibenzo[a,j]xanthenes and 1,8-Dioxooctahydroxanthene Derivatives Using Pentafluorophenyl Ammonium Triflate as a Novel Organocatalyst

Samad KHAKSAR*, Nosratollah BEHZADI   

  1. Chemistry Department, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
  • Received:2011-12-29 Revised:2012-03-20 Online:2012-05-30 Published:2012-05-30

Abstract: A simple and facile synthesis of 14-aryl and alkyl-14H-dibenzo[a,j]xanthenes and 1,8-dioxooctahydroxanthene derivatives has been successfully developed by treatment of β-naphthol or dimedone with aldehydes under mild conditions in the presence of a pentafluorophenyl ammonium triflate (PFPAT) organocatalyst. These catalytic condensation reactions represent green chemical processes and the PFPAT organocatalyst is air-stable, cost-effective, easy to handle, and easily removed from the reaction mixtures.

Key words: pentafluorophenyl ammonium triflate, organocatalyst, xanthene, β-naphthol