(and in some cases rhodium) catalysed regiospecific 5-exo-, 6-endo-and 6-exo-trig cyclisations of aryl iodides and vinyl bromides onto proximate alkenes or heteroaromatic rings (indole, pyrrole) lead to a wide variety of fused ring systems. In appropriate cases the methodology provides a facile approach to the creation of tetrasubstituted carbon centres. Double bond isomerisation in the product is only
一系列
钯(在某些情况下为
铑)催化的芳基
碘化物和
乙烯基溴化物在邻烯烃或杂芳环(
吲哚,
吡咯)上的区域特异性5-外-,6-内-和6-外-trig环化反应,导致宽各种稠环系统。在适当的情况下,该方法为创建四取代的碳中心提供了一种简便的方法。仅在少数情况下观察到产物中的双键异构化。