Fe3O4@SiO2@D-NHCS-Tr as Efficient and Reusable Catalyst for the Synthesis of indol-3-yl-4H-chromene via a Multi-Component Reaction Under Solvent-Free Conditions
A cheap and biocompatible ionic liquid [Betaine][H2PO4] was found to be an efficient and reusable catalyst for the direct substitution reaction of xanthen-9-ol under solvent-free conditions.
An efficient protocol for the synthesis of C3-symmetrical 1,3,5-triarylbenzenes under solvent-free conditions. γ-Al2O3/H5PW10V2O40 nanocomposite is introduced as a highly reusable catalyst.