Catalytic activity in transfer hydrogenation using ruthenium (II) carbonyl complexes containing two 1,8-naphthyridine as N-monodentate ligands
作者:Juana Gajardo、Juan C. Araya、Andrés Ibáñez、Véronique Guerchais、Hubert Le Bozec、Sergio A. Moya、Pedro Aguirre
DOI:10.1016/j.ica.2018.10.037
日期:2019.2
N-monodentate fashion. The ruthenium(II) complexes have been studied as catalysts in the transfer hydrogenation of acetophenone. We found that complexes show moderate activities and a 100% selectivity. The best turnover frequency (390 h−1) is found for cis-[RuCl2(CO)2(2-(4′-methoxyphenyl)-1,8-naphthyridine-κN8)2] when the substrate/catalysis ratio was 1000/1. The catalytic conditions were optimized
摘要一系列新的新型顺式[Ru(CO)2Cl2(L)2]配合物,L = 2-苯基-1,8-萘啶,2-(4'-硝基苯基)-1,8-萘啶, 2-(4'-溴苯基)-1,8-萘啶,2-(4'-甲基苯基)-1,8-萘啶,2-(3'-甲氧基苯基)-1,8-萘啶,2-(2' -甲氧基苯基)-1,8-萘啶和2-(4'-甲氧基苯基)-1,8-萘啶已被成功合成和表征。我们发现可以从[RuCl2(CO)2] 2直接合成高产率的配合物。顺式[RuCl2(CO)2(2-(4'-甲氧基苯基)-1,8-萘啶-κN8)2]和顺式-[RuCl2(CO)2(2-(2'-甲氧基苯基) )-1,8-萘啶-κN8)2]已通过X射线单晶衍射研究建立,该研究表明八面体的几何结构具有两个以N-单齿方式与金属配位的1,8-萘啶配体。已经研究了钌(II)配合物作为苯乙酮转移加氢的催化剂。我们发现复合物显示出适度的活性和100%的选择性。当底物/催化比为1000