Al₂O₃ Nanoparticles: An Efficient and Recyclable Nanocatalyst for the Rapid Synthesis of N -Heteroaryl Formamides under Solvent-Free Conditions

摘要

A series of N-heteroaryl formamides were efficiently synthesized from heteroarylamines and formic acid using Al2O3 nanoparticles as a heterogeneous catalyst under solvent-free conditions. The smaller size of Al2O3 nanoparticles with a higher surface to vo