Cationic Titanocene(III) Complexes for Catalysis in Single-Electron Steps

被引：83

作者：

Gansaeuer, Andreas ^{[1
]}

Hildebrandt, Sven ^{[1
]}

Michelmann, Antonius ^{[1
]}

Dahmen, Tobias ^{[1
]}

von Laufenberg, Daniel ^{[1
]}

Kube, Christian ^{[1
]}

Fianu, Godfred D. ^{[2
]}

Flowers, Robert A., II ^{[2
]}

机构：

[1] Univ Bonn, Kekule Inst Organ Chem & Biochem, D-53121 Bonn, Germany

[2] Lehigh Univ, Dept Chem, Bethlehem, PA 18015 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2015年 / 54卷 / 24期

基金：

美国国家科学基金会;

关键词：

cyclic voltammetry; electron transfer; homogeneous catalysis; radical reactions; titanium; HALIDE-PROMOTED REDUCTIONS; STRAIGHTFORWARD SYNTHESIS; RADICAL REACTIONS; HOMOLYTIC SUBSTITUTION; TANDEM REACTION; CYCLIZATIONS; EPOXIDES; ELEMENTS; TITANIUM(III); GENERATION;

D O I：

10.1002/anie.201501955

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By exploiting solvent and anion effects, [Cp2Ti](+) complexes for atom-economical catalysis in single-electron steps were developed and applied for the first time. These complexes constitute remarkably stable and active catalysts for radical arylations. The reaction kinetics and catalyst composition were studied by cyclic voltammetry and in situ IR spectroscopy.

引用

页码：7003 / 7006

页数：4

共 53 条

[1] SYNTHESIS AND STRUCTURE OF CP2TI(SO3CF3)(THF) [J].

BERHALTER, K ;

THEWALT, U .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1991, 420 (01) :53-56

[2] Solvent-Dependent Substrate Reduction by (Sm[N(SiMe3)2]2(THF)2}. An Alternative Approach for Accelerating the Rate of Substrate Reduction by Sm(II) [J].

Chciuk, Tesia V. ;

Hilmersson, Goran ;

Flowers, Robert A., II .

JOURNAL OF ORGANIC CHEMISTRY, 2014, 79 (20) :9441-9443

[3]

Cuerva J.M., 2006, TOP CURR CHEM, V264, P63, DOI DOI 10.1007/128_025

[4]

Curran D.P., 1996, Stereochemistry of Radical Reactions

[5] Revelation of the nature of the reducing species in titanocene halide-promoted reductions [J].

Enemærke, RJ ;

Larsen, J ;

Skrydstrup, T ;

Daasbjerg, K .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (25) :7853-7864

[6] Influence of the halogen in titanocene halide promoted reductions [J].

Enemærke, RJ ;

Larsen, J ;

Hjollund, GH ;

Skrydstrup, T ;

Daasbjerg, K .

ORGANOMETALLICS, 2005, 24 (06) :1252-1262

[7] Mechanistic investigation of the electrochemical reduction of Cp2TiX2 [J].

Enemærke, RJ ;

Larsen, J ;

Skrydstrup, T ;

Daasbjerg, K .

ORGANOMETALLICS, 2004, 23 (08) :1866-1874

[8] Is the trinuclear complex the true reducing species in the Cp2TiCl2/Mn- and Cp2TiCl2/Zn-promoted pinacol coupling? [J].

Enemærke, RJ ;

Hjollund, GH ;

Daasbjerg, K ;

Skrydstrup, T .

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE, 2001, 4 (06) :435-438

[9] Ti-Catalyzed Barbier-Type Allylations and Related Reactions [J].

Estevez, Rosa E. ;

Justicia, Jose ;

Bazdi, Btissam ;

Fuentes, Noelia ;

Paradas, Miguel ;

Choquesillo-Lazarte, Duane ;

Garcia-Ruiz, Juan M. ;

Robles, Rafael ;

Gansaeuer, Andreas ;

Cuerva, Juan M. ;

Oltra, J. Enrique .

CHEMISTRY-A EUROPEAN JOURNAL, 2009, 15 (12) :2774-2791

[10] The cross-selective titanium(III)-catalysed acyloin reaction [J].

Feurer, Markus ;

Frey, Georg ;

Hieu-Trinh Luu ;

Kratzert, Daniel ;

Streuff, Jan .

CHEMICAL COMMUNICATIONS, 2014, 50 (40) :5370-5372

← 1 2 3 4 5 6 →