NCN-Pincer Metal Complexes (Ti, Cr, V, Zr, Hf, and Nb) of the Phebox Ligand (<i>S,S</i>)<i>-</i>2,6-Bis(4′-isopropyl-2′-oxazolinyl)phenyl
作者:Alexey V. Chuchuryukin、Rubin Huang、Martin Lutz、John C. Chadwick、Anthony L. Spek、Gerard van Koten
DOI:10.1021/om200170b
日期:2011.5.23
Reaction of (S,S)-2,6-bis(4′-isopropyl-2′-oxazolinyl)phenyllithium (i-Pr-Phebox-Li) (2a) with 4,4′-bis[P-(chlorogold(I))diphenylphosphino]biphenyl [(dppbp)(AuCl)2] (5) afforded the new, bimetallic gold complex 4,4′-bis[P-(η1-C-i-Pr-Phebox-gold)diphenylphosphino]biphenyl [(P-Au(η1-C-i-Pr-Phebox))2(dppbp)] (6). Transmetalation of 6 with 2 equiv of Cl3MX (MX = TiOi-Pr, VCl, CrPy, ZrCl, HfCl, NbO) afforded
(S,S)-2,6-双(4'-异丙基-2'-恶唑啉基)苯基锂(i -Pr-Phebox-Li)(2a)与4,4'-双[ P-(氯金( I))二苯基膦基]联苯[(dppbp)(AUCL)2 ](5),得到新的,双金属金络合物4,4'-双[ P - (η 1 - ç -i-PR-Phebox -金)二苯基膦基]联苯[(P-的Au(η 1 - c ^ -我-Pr-Phebox))2(dppbp)](6)。的转移金属化6与2当量的Cl 3 MX(MX =的TiO我-Pr,VCL,CrPy,使用ZrCl,的HfCl,NBO),得到相应的化合物monopincer [的MC1 2 X(我-Pr-Phebox)](M =的Ti,V,Cr)的(7)和[的MC1 2 X(我- [Pr-Phebox)] 2(M = Zr,Hf,Nb)(8)和高产率的金原料5可以定量回收再利用。digold化合物6的固态结构,