were obtained in good yields by the treatment of propargylic hydroxy γ-lactams with some Lewis acids. Several propargylic and allenylic hydroxy γ-lactams were successfully converted to the corresponding ring-expanded benzazepines in various yields via a tandem decyclization-cyclization process in the presence of (TMS)2NLi, (TMS)2NNa, or n-BuLi under reflux conditions in THF.
通过用一些
路易斯酸处理炔丙基羟基γ-内酰胺,以高收率获得了脱
水-
水合产物。在(TMS)2 NLi,(TMS)2 NNa或n- BuLi回流下,通过串联脱环-环化过程,将几种炔丙基和烯丙基羟基γ-内酰胺成功地以各种收率转化为相应的扩环苯并ze庚因THF中的条件。