Cationic Gallium(III) Halide Complexes: A New Generation of p-Lewis Acids

被引：66

作者：

Tang, Shun ^{[1
]}

Monot, Julien ^{[1
]}

El-Hellani, Ahmad ^{[1
]}

Michelet, Bastien ^{[1
]}

Guillot, Regis ^{[1
]}

Bour, Christophe ^{[1
]}

Gandon, Vincent ^{[1
]}

机构：

[1] Univ Paris 11, ICMMO, UMR CNRS 8182, F-91405 Orsay, France

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2012年 / 18卷 / 33期

关键词：

cycloisomerization; gallium; heterocyclic carbenes; homogeneous catalysis; Lewis acids; GACL3-CATALYZED ORTHO-ETHYNYLATION; SKELETAL REORGANIZATION; ORGANIC-SYNTHESIS; TRICHLORIDE; CYCLOISOMERIZATION; ENYNES; ALKYNES; REARRANGEMENTS; CATALYSIS; ALUMINUM;

D O I：

10.1002/chem.201201202

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ga-neration X: Well-defined neutral and cationic gallium(III) halide complexes have been synthesized and evaluated in catalysis. Both the (NHC)GaX 3/AgSbF 6 catalytic mixture and isolated (NHC)GaX 2 + species function as exquisite π-Lewis acids in typical GaX 3-catalyzed reactions (see scheme). The cationic complexes are more active than GaX 3 and yet more resistant to hydrolysis, which allows lower catalytic loadings and faster reactions. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：10239 / 10243

页数：5

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