Treatment of diaryloxy- and triaryloxybenzenes in the presence of a Pd(TFA)2 catalyst and an AgOAc oxidant produces the corresponding benzobis- and benzotrisbenzofurans in good yields through double and triple intramolecular C–H/C–H coupling reactions, respectively.
在Pd(TFA)₂催化剂和AgOAc氧化剂的存在下,对二芳氧和三芳氧苯进行处理,可以通过双重和三重分子内C–H/C–H耦合反应,获得相应的苯并双
苯并呋喃和苯并三
苯并呋喃,并且产率良好。