by the kind of ligand employed. The sequential reaction composed of the C−C bond cleavage and the subsequent intra- and intermolecular C−C bond formations via the corresponding alkylpalladium species is also demonstrated. For example, an oxime having an alkynyl moiety at a suitable position reacts with a variety of alkenes to afford nitriles bearing dienylcyclopentane moiety in moderate to good yields
钯催化
环丁酮O的转化描述了将苯甲酰
肟合成各种腈。该反应可以通过两个重要步骤进行,即(i)将
肟的N-O键氧化加成到Pd(0)上,得到
环丁烯氨基
钯(II)物种,以及(ii)将这种物种的β-碳消除成得到反应性的烷基
钯物质。产品的种类非常取决于
环丁烷环上取代基的性质。CC键断裂的方向由所用
配体的种类控制。还证明了由CC键断裂以及随后的通过相应的烷基
钯物质形成的分子内和分子间CC键形成的顺序反应。例如,