Strategy for the Synthesis of Pyrimidine Derivatives: NbCl5-Mediated Cycloaddition of Alkynes and Nitriles
摘要:
Intermolecular cycloadditions of alkynes (terminal alkynes and internal alkynes) with aryl nitriles were successfully achieved, using an NbCl5 complex, to give substituted pyrimidine derivatives in high yields with excellent chemo- and regioselectivity.