Iridium(l) complex of chelating pyridine-2-thiolate ligand:: Synthesis, reactivity, and application to the catalytic E-selective terminal alkyne dimerization via C-H activation

被引：46

作者：

Ogata, Kenichi ^{[1
]}

Toyota, Akinori ^{[1
]}

机构：

[1] Tokyo Univ Agr & Technol, Grad Sch Engn, Koganei, Tokyo 1848588, Japan

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2007年 / 692卷 / 19期

关键词：

iridium complex; pyridine-2-thiolate; hydride complex; dimerization of alkyne;

D O I：

10.1016/j.jorganchem.2007.06.030

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel iridium(I) complex bearing a chelate-coordinated pyridine-2-thiolate ligand [Ir(eta(2)-SNC5H4)(PPh3)(2)](2) was prepared by the reaction of iridium ethylene complex [IrCl(C2H4)(PPh3)(2)] (1) with lithium salt of pyridine-2-thiol (Li[SNC5H4]). On the treatment of iridium(I) complex 2 with chloroform, iridium(III) dichloro-complex [IrCl2(eta(2)-SNC5H4)(PPh3)(2)] (3) was formed. Reactions of complex 2 with methyldiphenylsilane, acetic acid, and p-tolylacetylene afforded iridium(III) hydride complexes [IrH(SiMePh2)(eta(2)-SNC5H4)(PPh3)(2)] (4), [IrH(O2CCH3)(eta(2)-SNC5H4)(PPh3)(2)](5), and [IrH(C C(p-tolyl))(eta(2)-SNC5H4)(PPh3)(2)] (6), respectively. Complex 2 catalyzed dimerization of terminal alkynes leading to enynes (7) with high E-selectivity via C-H bond activation. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：4139 / 4146

页数：8

共 52 条

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