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 KITPHOSmonophosphinecomplex [(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