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.
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).
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。
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