The combination of CuI–K2CO3-PEG 400 facilitated the coupling-cyclization of o-iodobenzoic acid with terminal alkynes under ultrasound, affording a greener and practical approach towards 3-substituted isocoumarins with remarkable regioselectivity. This inexpensive and Pd and ligand free methodology gave rise to various isocoumarins of potential pharmacological interest.
CuI–K2CO3-P
EG 400 的组合在超声波作用下促进了邻
碘苯甲酸与末端
炔烃的偶联-环化反应,提供了一种更绿色且实用的方法来合成具有显著区域选择性的3-取代异
香豆素。这种廉价且不使用
钯和
配体的方法学产生了多种具有潜在药理学兴趣的异
香豆素。