Heteroarylmethylenephosphorus ylides underwent Michael addition with alkynediones and alkynediesters, followed by intramolecular cyclization and elimination of triphenylphosphine oxide to afford 1,2-diaroylbenzenes and 1,2-alkoxycarbonylcarbo- and heterocycles. The analogous (4 + 2) cycloaddition led to the formation of 2,3-diaroylquinolines.
杂芳基亚甲基
磷叶立德与炔二酮和炔二酯进行迈克尔加成,然后进行分子内环化和
三苯基氧化膦的消除,得到 1,2-二芳基苯和 1,2-烷氧基羰基碳和杂环。类似的 (4 + 2) 环加成导致形成 2,3-二芳酰基
喹啉。