Rhodium(I)-Catalyzed [4+2+2] Cycloadditions of 1,3-Dienes, Alkenes, and Alkynes for the Synthesis of Cyclooctadienes
作者:Paul A. Wender、Justin P. Christy
DOI:10.1021/ja060878b
日期:2006.4.1
The first [4+2+2] cycloadditions involving terminal alkynes and diene-enes, including a fully intramolecular example, are reported resulting in the formation of cyclooctadienes using [RhCl(CO)2]2 (5 mol %) treated with AgSbF6 (10 mol %) as a precatalyst. The reaction is general for a variety of terminal alkynes, as well as variously substituted diene-enes (yields up to 88%).
据报道,第一个涉及末端炔烃和二烯-烯的 [4+2+2] 环加成反应,包括一个完全分子内的例子,导致使用 [RhCl(CO)2]2 (5 mol%) 用 AgSbF6 处理形成环辛二烯( 10 mol%) 作为预催化剂。该反应适用于各种末端炔烃以及各种取代的二烯-烯(产率高达 88%)。