Ring-fused and spiro cyclopentenones by Ni(CO)4-promoted intermolecular carbonylative cycloaddition of acetylenes with 3-halo- and 1-(halomethyl)cycloalkenes
作者:Lluis Pages、Amadeu Llebaria、Francisco Camps、Elies Molins、Carles Miravitlles、Josep M. Moreto
DOI:10.1021/ja00052a047
日期:1992.12
The title carbonylative cycloaddition of five- to eight-member ring 3-halo- and 1-(halomethyl)cycloalkenes with different acetylenes was studied. From moderate to good yields of ring-fused and spiro cyclopentenone derivatives were obtained, especially in the reaction with acctylenes bearing electron-withdrawing substituents by propa selection of the reaction conditions to avoid the acetylene polyinsertion
研究了五至八元环 3-卤代和 1-(卤代甲基)环烯烃与不同乙炔的标题羰基化环加成反应。获得了中等至良好收率的稠环和螺环戊烯酮衍生物,特别是在与带有吸电子取代基的乙炔反应中,通过选择反应条件以避免乙炔多插入和/或有机镍中间体的其他副反应