Silver‐Free Activation of Ligated Gold(I) Chlorides: The Use of [Me3NB12Cl11]− as a Weakly Coordinating Anion in Homogeneous Gold Catalysis |
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| Authors: | Michael Wegener Florian Huber Christoph Bolli Prof. Carsten Jenne Prof. Stefan F. Kirsch |
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| Affiliation: | 1. Organic Chemistry, Bergische Universit?t Wuppertal, Gaussstrasse 20, 42119 Wuppertal (Germany), Fax: (+49)?202‐4392648;2. Inorganic Chemistry, Bergische Universit?t Wuppertal, Gaussstrass 20, 42119 Wuppertal (Germany) |
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| Abstract: | Phosphane and N‐heterocyclic carbene ligated gold(I) chlorides can be effectively activated by Na[Me3NB12Cl11] ( 1 ) under silver‐free conditions. This activation method with a weakly coordinating closo‐dodecaborate anion was shown to be suitable for a large variety of reactions known to be catalyzed by homogeneous gold species, ranging from carbocyclizations to heterocyclizations. Additionally, the capability of 1 in a previously unknown conversion of 5‐silyloxy‐1,6‐allenynes was demonstrated. |
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| Keywords: | borates cyclization gold homogeneous catalysis weakly coordinating anions |
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