Difluoroboroxymolybdenum Fischer Carbene Complexes as Precursors of Acyl Radicals: Dimerization and Trapping with Electron-Deficient Alkenes
作者:José Barluenga、Félix Rodríguez、Francisco J. Fañanás
DOI:10.1002/1521-3765(20000602)6:11<1930::aid-chem1930>3.0.co;2-8
日期:2000.6.2
complexes 2, which undergo loss of the metal fragment at room temperature to form 1,2-diketones 3, 1,2-hydroxy ketones 4, or dimers 5 through a dimerization or decarbonylation-dimerization process of acyl radicals. Decomposition of 2 in the presence of electron-deficient alkenes 11 and 18 furnishes the two-, three-, and four-component coupling products 12, 13, 19, 20, and 21.
五羰基酰基钼酸酯1与三氟化硼反应生成二氟硼氧基菲舍尔卡宾配合物2,该配合物在室温下会损失金属碎片,从而通过二聚反应或二聚反应形成1,2-二酮3、1,2-羟基酮4或二聚体5。酰基的脱羰二聚过程。在缺电子的烯烃11和18的存在下进行2的分解可提供二,三和四组分偶联产物12、13、19、20和21。