6H-Dibenzopyrans are prepared starting from ortho-substituted aryl iodides, o-bromophenols and activated olefins, in the presence of a catalytic system based on palladium acetate and norbornene by means of a simple and efficient, one-pot, three-component procedure under mild conditions.
在一种基于
醋酸钯和
降冰片烯的催化体系存在下,通过一种简单高效的单锅三组分程序,在温和条件下从正交取代的芳基
碘化物、邻
溴苯酚和活化烯烃开始制备 6H-
二苯并呋喃。