Ruthenium(ii) N,S-heterocyclic carbene complexes and transfer hydrogenation of ketones
作者:Nini Ding、T. S. Andy Hor
DOI:10.1039/c0dt00562b
日期:——
A series of ruthenium(II) N,S-heterocycliccarbene (NSHC) complexes RuIIX(RCOO)(PPh3)2(3-R′BzTh) (BzTh = benzothiazol-2-ylidene; R = Me, R′/X = Bz/Br (4), Pri/I (6), Bui/I (8); R = Et, R′/X = Bz/Br (5), Pri/I (7), Bui/I (9)) have been synthesized and characterized. Single-crystal X-ray structural analysis revealed that in each case the Ru(II) center adopts an essentially octahedral geometry, coordinated
一系列 钌(II)N,S-杂环卡宾 (非甾体抗炎药)配合物 Ru II X(RCOO)(PPh 3)2(3-R′BzTh) (z = 苯并噻唑-2-亚烷基; R =我,R′/ X = Bz /溴(4),Pr i / I(6),Bu i / I(8);R = Et,R′/ X = Bz /溴(5),Pr i / I(7),Bu i / I(9))已经合成并表征。单晶X-射线结构分析显示,在每种情况下的Ru(II)中心采用基本上八面体几何构,由两个配位反式-取向PPh 3 由NSHC完成,螯合 羧酸盐 和卤化物X(X = 溴(4–5),X = I(6–9))配体。虽然噻唑-2-基二烯 钌(II) 建立复合物并将其应用于复分解,这些 苯并噻唑-2-亚烷基配合物(4–9)是同类产品中的第一个。已经研究和讨论了它们对酮转移氢化的催化活性。
US5710588A
申请人:——
公开号:US5710588A
公开(公告)日:1998-01-20
Formation and crystallographic elucidation of stable [4 + 2]-coordinate nickel(ii) N,S-heterocyclic carbene (NSHC) complexes
作者:Nini Ding、Jun Zhang、T. S. Andy Hor
DOI:10.1039/b815876b
日期:——
series of square-planar N,S-heterocycliccarbene (NSHC) complexes trans-[NiX(2)(N-RBzTh)(2)] (BzTh = benzothiazolin-2-ylidene) (R/X = Bz/Br; Me/I; Et/I; Pr(i)/I; Bu(i)/I) have been synthesized and characterized by X-ray single-crystal diffraction analysis. These are the first crystallographically established NSHC complexes of nickel in the literature. The N,S-heterocycliccarbene (NSHC) rings invariably
一系列正方形平面的N,S-杂环卡宾(NSHC)配合物反式-[NiX(2)(N-RBzTh)(2)](BzTh =苯并噻唑啉-2-亚烷基)(R / X = Bz / Br; Me / I; Et / I; Pr(i)/ I; Bu(i)/ I)已通过X射线单晶衍射分析进行了表征。这些是文献中第一个通过晶体学建立的镍的NSHC配合物。N,S-杂环卡宾(NSHC)环总是扭曲地偏离与金属配位平面的共面,从而使N-取代基在金属的顶部和下方移动,从而促进了静电γ-氢化物的相互作用,因此得到了[4] + 2]在Ni(ii)中心进行协调。这些化合物对Bu(4)NBr中的还原性Ullmann型偶联反应具有活性,对溴苯甲醚或溴代甲苯的活性高于溴苯。