Porous magnesia as solid base for ligand-free Heck reaction

被引：9

作者：

Chen, Fengxi ^{[1
]}

Toh, Kelvin ^{[1
]}

Shen, Shoucang ^{[1
]}

Gan, Geok Joo ^{[1
]}

机构：

[1] Inst Chem & Engn Sci, Singapore 627833, Singapore

来源：

CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 03期

关键词：

Heck reaction; solid base; porous MgO;

D O I：

10.1016/j.catcom.2006.06.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

MgO particles with different morphologies and textural properties are prepared and tested as solid bases for various ligand-free Heck reactions at low Pd loading (0.05 mol%). Moderate (57%) to high (99.5%) conversions have been achieved with fresh porous polyhedral MgO particles. Used MgO particles are recovered by filtration and reactivated by calcination at 500 degrees C in air. The reactivated MgO particles have been used four times as solid base for arylation of styrene with bromobenzene with conversion of 70-86% and turnover number of 1411-1714. (c) 2006 Elsevier B.V. All rights reserved.

引用

收藏

页码：405 / 409

页数：5

相关论文

共 14 条

[1] Magnesium-containing mixed oxides as basic catalysts:: base characterization by carbon dioxide TPD-MS and test reactions [J].

Aramendía, MA ;

Borau, V ;

Jiménez, C ;

Marinas, A ;

Marinas, JM ;

Ruiz, JR ;

Urbano, FJ .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2004, 218 (01) :81-90

[2] The heck reaction as a sharpening stone of palladium catalysis [J].

Beletskaya, IP ;

Cheprakov, AV .

CHEMICAL REVIEWS, 2000, 100 (08) :3009-3066

[3] Alkali-exchanged sepiolites containing palladium as bifunctional (basic sites and noble metal) catalysts for the Heck and Suzuki reactions [J].

Corma, A ;

García, H ;

Leyva, A ;

Primo, A .

APPLIED CATALYSIS A-GENERAL, 2004, 257 (01) :77-83

[4] Basic zeolites containing palladium as bifunctional heterogeneous catalysts for the Heck reaction [J].

Corma, A ;

García, H ;

Leyva, A ;

Primo, A .

APPLIED CATALYSIS A-GENERAL, 2003, 247 (01) :41-49

[5] Thermal decomposition of dimethoxymethane and dimethyl carbonate catalyzed by solid acids and bases [J].

Fu, YC ;

Zhu, HY ;

Shen, JY .

THERMOCHIMICA ACTA, 2005, 434 (1-2) :88-92

[6] LIQUID-PHASE ORGANIC-REACTIONS CATALYZED BY INORGANIC SOLID ACIDS AND BASES [J].

IZUMI, Y ;

ONAKA, M .

JOURNAL OF MOLECULAR CATALYSIS, 1992, 74 (1-3) :35-42

[7] HYDROSILYLATION OF CARBONYL-COMPOUNDS CATALYZED BY SOLID ACIDS AND BASES [J].

IZUMI, Y ;

NANAMI, H ;

HIGUCHI, K ;

ONAKA, M .

TETRAHEDRON LETTERS, 1991, 32 (36) :4741-4744

[8] Supported palladium as catalyst for carbon-carbon bond construction (Heck reaction) in organic synthesis [J].

Köhler, K ;

Wagner, M ;

Djakovitch, L .

CATALYSIS TODAY, 2001, 66 (01) :105-114

[9] Ligand-free Heck reactions using low Pd-loading [J].

Reetz, MT ;

de Vries, JG .

CHEMICAL COMMUNICATIONS, 2004, (14) :1559-1563

[10] A highly active phosphine-free catalyst system for Heck reactions of aryl bromides [J].

Reetz, MT ;

Westermann, E ;

Lohmer, R ;

Lohmer, G .

TETRAHEDRON LETTERS, 1998, 39 (46) :8449-8452