Ortho-alkylated and ortho-acylated pyridines have been conveniently synthesized from pyridine N-oxides and alkynes under visible-light-mediation in a metal-free manner. The alkynes served as both alkylating and acylating agents via switching between anaerobic and aerobic conditions. The overall strategy accommodates a broad scope of substituted pyridine N-oxides and alkynes, with excellent regioselectivity
已经在可见光-介导下以无
金属的方式方便地由
吡啶N-氧化物和
炔烃合成了邻烷基化和邻酰基化的
吡啶。炔通过在厌氧和需氧条件之间切换而同时充当烷基化剂和酰化剂。总体策略适用于广泛范围的取代
吡啶N-氧化物和
炔烃,在许多情况下具有出色的区域选择性。