A microwave-irradiation-assisted synthesis of novel 1,3-azol-2-yl-substituted O-heterocycles, namely flavones, chromones, coumarins, and chromanones, is reported. Starting from the appropriate bromo derivatives and 1,3-azoles, this palladium and copper co-catalyzed method provides moderate to good yields and excellent regioselectivity. The ligand- and base-free method can be a useful, generally applicable
报道了一种微波辐射辅助合成的新型 1,3-唑-2-基取代的 O-杂环,即
黄酮、
色酮、
香豆素和色满酮。从合适的
溴衍
生物和 1,3-唑类开始,这种
钯和
铜共催化方法提供了中等至良好的产率和出色的区域选择性。无
配体和无碱方法是一种有用的、普遍适用的合成工具,可用于形成新的 O-杂环。