HNO3@nano SiO2 Catalyzed Green and Efficient Synthesis of Symmetrical and Unsymmetrical Di(indolyl)indoline-2-ones by Stirring and Grindstone Methods

摘要

A simple, efficient, solvent-free, and mild method for the preparation of di(indolyl)indoline-2-ones (symmetrical and unsymmetrical), have been reported in the presence of HNO3@nano SiO2 under both stirring and grinding techniques at room temperature successfully.