Elementary Steps of Gold Catalysis: NMR Spectroscopy Reveals the Highly Cationic Character of a "Gold Carbenoid"

被引：224
作者：
Seidel, Guenter [1 ]
Mynott, Richard [1 ]
Fuerstner, Alois [1 ]
机构：
[1] Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 14期
关键词：
carbenes; carbocations; gold; homogeneous catalysis; reactive intermediates; ALKYLIDENE COMPLEXES; 3,3-DISUBSTITUTED CYCLOPROPENES; CYCLOISOMERIZATION REACTIONS; CHIRALITY TRANSFER; C-13; NMR; PI-ACIDS; METAL; REARRANGEMENTS; ENYNES; PRECURSORS;
D O I：
10.1002/anie.200806059
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
What are you? Even though the metal-induced ring opening of 3,3-disubstituted cyclopropenes is known to serve as a genuine carbene generator, the use of AuI in this reaction leads to a reactive intermediate with highly cationic character. This result has important implications for gold catalysis in general, which in the past has been commonly attributed to the intervention of gold carbenes. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
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收藏
页码：2510 / 2513
页数：4
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