Chlorophosphines as auxiliary ligands in ruthenium-catalyzed nitrile hydration reactions: application to the preparation of β-ketoamides
作者:Rebeca González-Fernández、Pedro J. González-Liste、Javier Borge、Pascale Crochet、Victorio Cadierno
DOI:10.1039/c5cy02142a
日期:——
heteroaryl or alkyl group). In the reaction medium, the coordinated chlorophosphines readily undergo hydrolysis to generate the corresponding phosphinous acids PR2OH, which are well-known “cooperative” ligands for this catalytic transformation. Among the complexes employed, best results were obtained with [RuCl2(η6-p-cymene)P(4-C6H4F)2Cl}]. Performing the catalytic reactions at 40 °C with 2 mol% of this
腈成酰胺,在中性条件下的水的催化水合,已使用一系列芳烃-钌(的研究II含有市售chlorophosphines作为辅助配位体)配合物,即化合物将[RuCl 2(η 6 - p(-cymene) PR 2 Cl)](R =芳基,杂芳基或烷基)。在反应介质中,配位的氯膦易于水解生成相应的次膦酸PR 2 OH,次膦酸PR 2 OH是该催化转化的众所周知的“配合”配体。中所采用的复合物,用将[RuCl获得最好的结果2(η 6 - p-cymene)P(4-C 6 H 4 F)2 Cl}]。在40°C下用2 mol%的这种络合物进行催化反应,可以将各种有机腈以高收率和较短时间选择性地转化为相应的伯酰胺。的应用将[RuCl 2(η 6 - p -cymene)P(4-C 6 H ^ 4 F)2氯}]在合成有用β酮酰胺的制备也提出。