Ruthenium‐Catalyzed Cycloisomerization of 2‐Alkynylstyrenes via 1,2‐Carbon Migration That Leads to Substituted Naphthalenes
作者:Takuma Watanabe、Haruka Abe、Yuichiro Mutoh、Shinichi Saito
DOI:10.1002/chem.201802413
日期:2018.8.9
ruthenium‐catalyzed carbocyclization of 2‐alkynylstyrenes that involves a very rare 1,2‐carbon migration of internal alkynes is reported. Various 1,2‐di ‐and 1,4,7‐trisubstituted naphthalenes are synthesized. Mechanistic studies revealed that this reaction proceeds via a disubstituted vinylidene complex as the key intermediate by 1,2‐carbon migration of the 2‐alkynylstyrenes.
据报道,钌催化的2-炔基苯乙烯的碳环化涉及极少的内部炔烃的1,2-碳迁移。合成了各种1,2-二和1,4,7-三取代的萘。机理研究表明,该反应通过二取代的亚乙烯基配合物进行,该配合物是2-炔基苯乙烯的1,2-碳迁移的关键中间体。