Copper-catalyzed alkyne cycloaddition on electron deficient azides via tetrazolo[1,5-a]pyrimidines

摘要

(Chemical Equation Presented) Tetrazolo[1,5-a]pyrimidines are capable of serving as masked azides in copper-catalyzed Huisgen cyclization with a variety of terminal alkynes, providing a simple protocol for the generation of novel 4′-substituted 2-(1′,2′,3′-triazol-1′-yl) pyrimidines.