Peri- and stereoselective cycloadducts were obtained from the reactions of 8-aryl-8-azaheptafulvenes with some sulfenes. 8-Aryl-8-azaheptafulvenes reacted with phenylsulfene to give cis [8+2] cycloadducts as the sole products which would have resulted either from the endo approach or via the endo intermediate of the two reagents. On the other hand, with benzoylsulfene trans [8+2] cycloadducts were
                                    从 8-芳基-8-氮杂七富烯与一些亚砜的反应中获得了周边和立体选择性环加合物。8-Aryl-8-azaheptafulvenes 与苯亚砜反应得到顺式 [8+2] 环加合物作为唯一的产物,该产物是由内向方法或通过两种试剂的内向中间体产生的。另一方面,与苯甲酰亚砜反式 [8+2] 环加合物被分离出来。通过考虑最初形成的顺式加合物的差向异构化,使后一种产物的形成合理化。
乙烯基亚砜的顺式 [8+2] 环加合物不会产生反式异构体,而是在碱的影响下产生氢迁移的衍
生物。还讨论了上述反应的机理。