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首页> 外文期刊>Organometallics >Regioselective Intermolecular Coupling Reaction of Arylketones and Alkenes Involving C-H Bond Activation Catalyzed by an in Situ Formed Cationic Ruthenium Hydride Complex
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Regioselective Intermolecular Coupling Reaction of Arylketones and Alkenes Involving C-H Bond Activation Catalyzed by an in Situ Formed Cationic Ruthenium Hydride Complex

机译:原位形成的阳离子氢化钌配合物催化涉及C-H键活化的芳酮与烯烃的区域选择性分子间偶联反应

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摘要

The cationic ruthenium hydride complex, formed in situ from the treatement of the tetranuclear ruthenium hydride complex {[(PCy3)(CO)RuH](4)(mu(4)-O)(mu(3)-OH)(mu(2)-OH)} with HBF4 center dot OEt2, was found to be a highly effective catalyst for the intermolecular coupling reaction of arylketones and 1-alkenes to give substituted indene and ortho-C-H insertion products. The formation of the indene products resulted from the initial alkene isomerization ortho-C-H insertion of 2-alkene and dehydrative cyclization. The preliminary mechanistic studies revealed a rapid and reversible ortho-C-H bond activation followed by the rate-limiting C-C bond formation step for the coupling reaction. C-C bond formation step for the coupling reaction.
机译:阳离子氢化钌络合物,由四核氢化钌络合物{[((PCy3)(CO)RuH](4)(mu(4)-O)(mu(3)-OH)(mu(发现具有HBF 4中心点OEt 2的2)-OH)}是用于芳基酮和1-烯烃的分子间偶联反应以产生取代的茚和邻-CH插入产物的高效催化剂。茚产物的形成是由2-烯烃的初始烯烃异构化,邻-C-H插入和脱水环化引起的。初步的机理研究表明,快速和可逆的邻-C-H键活化随后是偶联反应的限速C-C键形成步骤。 C-C键形成步骤用于偶联反应。

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