Nano-TiO2: An Eco-Friendly and Re-Usable Catalyst for the Synthesis of 14-Aryl or Alkyl-14H-dibenzo[a,j]xanthenes

Synthesis of 14-aryl or alkyl-14H-dibenzo[a,j]xanthenes using nano-TiO2 as eco-friendly and efficient catalyst is reported. Short reaction times, high yields, a clean process, simple methodology, easy work-up and green conditions are advantages of this protocol.