Cp*rhodium and iridium complexes with bisoxazolines: synthesis, fluxionality and applications as asymmetric catalysts for Diels-Alder reactions

被引：21

作者：

Davies, DL ^{[1
]}

Fawcett, J ^{[1
]}

Garratt, SA ^{[1
]}

Russell, DR ^{[1
]}

机构：

[1] Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 662卷 / 1-2期

关键词：

Cp*rhodium complexes; Cp*iridium complexes; bisoxazolines;

D O I：

10.1016/S0022-328X(02)01859-4

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of the dimers [MCl2CP*](2) (M = Rh, It) with bis-oxazolines [N-N = bis(2-oxazoline) (box), 2,2-bis(2-oxazolinyl)propane (bop), 1,2-bis(2-oxazolinyl)benzene (benbox)] in the presence of NaSbF6 (or KPF6) gives complexes [MCl(N-N)Cp*] [EF6] (E = P or Sb) which have been fully characterised. Treatment of some of these with AgSbF6 generates dications [Rh(OH2)(N-N)Cp*]2(+), some of which are fluxional at room temperature. One of these is an enantioselective catalyst for the Diels-Alder reaction of methacrolein and cyclopentadiene. Three complexes, [RhCl(Pr-i-box)Cp*][SbF6], [RhCl(Pr-i-bop)Cp*][SbF6] and [RhCl(Et-benbox)Cp*][SbF6] have been characterised by X-ray crystallography. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：43 / 50

页数：8