5-Substituted 10, 11-dihydrodibenzo [b, f] thiepinium salts were synthesized in order to elucidate the mechanism of reactions between acyclic triarylsulfonium salts and organolithiums. The reaction of aryllithiums with 5-substituted 10, 11-dihydrodibenzo [b, f] thiepinium salts has been investigated to get the results, as shown in Table I. The mechanisms for the formation of all products of the runs in Table I have been clearly explained as shown in Chart 3.
为了阐明无环三芳基锍盐和有机锂之间的反应机理,我们合成了 5-取代的 10,11-二氢二苯并 [b,f] 硫鎓盐。研究了芳基锂与 5-取代的 10,11-二氢二苯并[b,f]噻吩盐的反应,结果如表 I 所示。如图 3 所示,表 I 中所有运行产物的形成机理都得到了清楚的解释。