9-phenyl-9-borafluorene with a series of 1,2-dipolar organic molecules is investigated, revealing that either adducts or seven-membered heterocycles are generated. A nitrile, imine, and isonitrile formed the corresponding coordination complexes that showed no evidence of conversion to ring expanded products. An aldehyde, ketone, and ketene inserted the C═O moiety into the endocyclic B–C bond resulting in
研究了9-苯基-9-
硼芴与一系列1,2-偶极有机分子的反应性,表明生成了加合物或七元杂环。腈,
亚胺和异腈形成了相应的配位络合物,没有显示出转化为环膨胀产物的迹象。醛,酮和烯酮将C═O部分插入到内环B–C键中,从而产生BOC 5
硼环。
异氰酸酯根据底物的极化而插入C = N或C = O,前者是产生BNC 5环系统的唯一底物。结果表明9-
硼芴作为有效试剂产生具有
联苯骨架的七元
硼环的潜力。