C,O-Chelated BINOL/Gold(III) Complexes: Synthesis and Catalysis with Tunable Product Profiles
作者:Jian-Fang Cui、Hok-Ming Ko、Ka-Pan Shing、Jie-Ren Deng、Nathanael Chun-Him Lai、Man-Kin Wong
DOI:10.1002/anie.201612243
日期:2017.3.6
Unprecedented stable BINOL/gold(III) complexes, adopting a novel C,O‐chelation mode, were synthesized by a modular approach through combination of 1,1′‐binaphthalene‐2,2′‐diols (BINOLs) and cyclometalated gold(III) dichloride complexes [(C^N)AuCl2]. X‐ray crystallographic analysis revealed that the bidentate BINOL ligands tautomerized and bonded to the AuIII atom through C,O‐chelation to form a five‐membered
通过一种模块化的方法,通过组合1,1'-萘-2,2'-二醇(BINOLs)和环金属化金(III),以新颖的C,O-螯合模式合成了史无前例的稳定BINOL /金(III)配合物)二氯化物络合物[(C ^ N)AuCl 2 ]。X射线晶体学分析表明,双齿BINOL配体通过C,O螯合互变异构并键合到Au III原子上,形成五元环,而不是传统的O,O'螯合形成七元环。这些金(III)配合物催化邻炔基苯甲醛与正烷基三甲酸酯的缩醛化/环异构化和碳烷氧基化。