Ruthenium Complexes of κ(P)- and κ(P)-η<sup>6</sup>-Coordinated KITPHOS Monophosphines: Efficient Catalysts for the Direct Ortho Arylation of 2-Phenylpyridine and <i>N</i>-Phenylpyrazole with Aryl Chlorides
作者:Simon Doherty、Julian G. Knight、Carrie R. Addyman、Catherine H. Smyth、Nicholas A. B. Ward、Ross W. Harrington
DOI:10.1021/om200843f
日期:2011.11.14
P-coordinated KITPHOS monophosphine complex [(p-cymene)RuCl2(KITPHOS)] in chlorobenzene at 120 °C resulted in displacement of the p-cymene to afford [κ(P)-η6-KITPHOS}RuCl2], the first example of a constrained-geometry complex in which the κ(P)-bonded diphenylphosphino group and the η6-coordinated proximal phenyl ring are connected by an unsaturated two-carbon tether; both complexes form efficient catalysts
热解的P-协调KITPHOS的单膦配合物[(p -cymene)的RuCl 2(KITPHOS)]在120氯苯℃下导致的位移p -cymene,得到[κ(P)-η 6 -KITPHOS}的RuCl 2 ]中,限制几何构型配合物的第一示例,其中,κ(P)键合的二苯基膦基和η 6配位的基苯基环的不饱和二碳系链连接; 两种络合物形成有效的催化剂,用于2-苯基吡啶和N-苯基吡唑与一系列芳基氯的直接邻位芳基化。