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1,3,5-己三烯的一种高度富电子二硼类似物的氧化、配位及镍介导的解构

Oxidation, Coordination, and Nickel-Mediated Deconstruction of a Highly Electron-Rich Diboron Analogue of 1,3,5-Hexatriene.

作者信息

Hermann Alexander, Fantuzzi Felipe, Arrowsmith Merle, Zorn Theresa, Krummenacher Ivo, Ritschel Benedikt, Radacki Krzysztof, Engels Bernd, Braunschweig Holger

机构信息

Institute for Inorganic Chemistry & the Institute for Sustainable, Chemistry & Catalysis with Boron, Julius-Maximilians-University Würzburg, Am Hubland, 97074, Würzburg, Germany.

Institute for Physical and Theoretical Chemistry, Julius-Maximilians-University Würzburg, Emil-Fischer-Straße 42, 97074, Würzburg, Germany.

出版信息

Angew Chem Int Ed Engl. 2020 Sep 1;59(36):15717-15725. doi: 10.1002/anie.202006131. Epub 2020 Jul 1.

DOI:10.1002/anie.202006131
PMID:32449598
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7497145/
Abstract

The reductive coupling of an N-heterocyclic carbene (NHC) stabilized (dibromo)vinylborane yields a 1,2-divinyldiborene, which, although isoelectronic to a 1,3,5-triene, displays no extended π conjugation because of twisting of the C B C chain. While this divinyldiborene coordinates to copper(I) and platinum(0) in an η -B and η -C B fashion, respectively, it undergoes a complex rearrangement to an η -1,3-diborete upon complexation with nickel(0).

摘要

N-杂环卡宾（NHC）稳定的（二溴）乙烯基硼烷的还原偶联反应生成1,2-二乙烯基二硼烯，尽管其与1,3,5-三烯等电子，但由于CBC链的扭曲，不存在扩展的π共轭。虽然这种二乙烯基二硼烯分别以η-B和η-CB的方式与铜（I）和铂（0）配位，但与镍（0）络合时会发生复杂的重排，生成η-1,3-二硼环丁二烯。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/6b58ccc60c35/ANIE-59-15717-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/d863b25ae176/ANIE-59-15717-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/b879a7198fc5/ANIE-59-15717-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/2e4f473ca458/ANIE-59-15717-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/6134b9dbf840/ANIE-59-15717-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/6634efea7b5d/ANIE-59-15717-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/182d95a406ef/ANIE-59-15717-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28e2/7497145/6b58ccc60c35/ANIE-59-15717-g008.jpg

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