Formation of palladium(0) complexes from Pd(OAc)2 and a bidentate phosphine ligand (dppp) and their reactivity in oxidative addition

被引：152

作者：

Amatore, C ^{[1
]}

Jutand, A ^{[1
]}

Thuilliez, A ^{[1
]}

机构：

[1] Ecole Normale Super, CNRS, UMR 864024, Dept Chim, F-75231 Paris 5, France

来源：

ORGANOMETALLICS | 2001年 / 20卷 / 15期

关键词：

D O I：

10.1021/om0101137

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A Pd-0 complex is spontaneously generated from Pd(OAc)(2) and a bidentate phosphine such as dppp (1,3-bis(diphenylphosphino)propane). dppp is the reducing agent and is oxidized to the hemioxide dppp(O). The intramolecular reduction step is reversible. A stable Pd-0 complex is quantitatively formed in the presence of 2 equiv of dppp, water, and a base (NEt3). The oxidative addition of PhI gives a cationic complex, PhPd(dppp)(dppp(O))(+), in which dppp(O) behaves as a monodentate ligand. PhPd(OAc)(dppp) is formed in the presence of added AcO-. The oxidative addition of PhI is an intricate reaction whose kinetics has been investigated only in the presence of added AcO-. It involves reactive dimeric or/and monomeric Pd-0 complexes ligated by AcO- whose relative reactivity is a function of the PhI concentration.

引用

页码：3241 / 3249

页数：9

共 31 条

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