La₂O₃/Reduced Graphene Oxide Nanocomposite: A Highly Efficient, Reusable Heterogeneous Catalyst for the Synthesis of Biologically Important Bis(indolyl)methanes Under Solvent Free Conditions.

Synthesis and characterization of Lanthanum Oxide-reduced graphene oxide (La₂O₃/RGO) nanocomposite and its application as heterogeneous, reusable catalyst has been reported in this article. Biologically important molecules bis(indolyl)methanes are synthesized in mild reaction condition with excellent yield under solvent free condition. Catalyst was reused for four times without any significant changes in the yields obtained. Reusability, green synthesis and environmentally benign nature makes La₂O₃/RGO one of the best catalyst for the synthesis of biologically important bis(indolyl)methanes.