Arene‐Ruthenium(II) and Bis(allyl)‐Ruthenium(IV) Complexes Containing 2‐(Diphenylphosphanyl)pyridine Ligands: Potential Catalysts for Nitrile Hydration Reactions?
作者:Rocío García‐Álvarez、Sergio E. García‐Garrido、Josefina Díez、Pascale Crochet、Victorio Cadierno
DOI:10.1002/ejic.201200592
日期:2012.9
of the 2-(diphenylphosphanyl)pyridine ligands to form stable κ2-(P,N)-chelate rings, as demonstrated by NMR spectroscopy and catalytic experiments performed with the isolated cationic derivatives [RuCl(η6-arene)κ2-(P,N)-P N}][SbF6] [P N = PPh2py, PPh2(py-4-NMe2)]. Despite its reluctance to adopt a chelating κ2-(P,N) coordination mode, cooperative effects of the bulky 2-(diphenylphosphanyl)pyridine
中性芳烃-钌(II)配合物[RuCl2(η6-芳烃)κ1-(P)-PPh2py}]和[RuCl2(η6-芳烃)κ1-(P)-PPh2(py-4-NMe2)}] (芳烃 = 苯、对伞花烃、均三甲苯、六甲基苯)已被合成并研究作为使用苯甲腈作为模型底物将腈选择性水合为酰胺的潜在催化剂。由于 2-(二苯基膦酰基)吡啶配体形成稳定的κ2-(P,N)-螯合环的高趋势,这些配合物的有效性很低,正如核磁共振光谱和用分离的阳离子衍生物进行的催化实验所证明的。 RuCl(η6-芳烃)κ2-(P,N)-PN}][SbF6] [PN = PPh2py, PPh2(py-4-NMe2)]。尽管不愿意采用螯合 κ2-(P,N) 配位模式,在复合物[RuCl2(η6-芳烃)κ1-(P)-PPh2(py-6-叔戊基)中未观察到庞大的2-(二苯基膦酰基)吡啶配体PPh2(py-6-叔戊基)的协同作用)}](芳烃 =