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铂模板化的B=N单元偶联反应:1,3 - 二烯和丁三烯的BNBN类似物的合成

Platinum-Templated Coupling of B=N Units: Synthesis of BNBN Analogues of 1,3-Dienes and a Butatriene.

作者信息

Brunecker Carina, Arrowsmith Merle, Fantuzzi Felipe, Braunschweig Holger

机构信息

Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.

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

出版信息

Angew Chem Int Ed Engl. 2021 Jul 26;60(31):16864-16868. doi: 10.1002/anie.202106161. Epub 2021 Jun 24.

DOI:10.1002/anie.202106161
PMID:34036694
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8362192/
Abstract

The 1:2 reaction of [μ-(dmpm)Pt(nbe)] (dmpm=bis(dimethylphosphino)methane, nbe=norbornene) with Cl BNR(SiMe ) (R=tBu, SiMe ) yields unsymmetrical (N-aminoboryl)aminoboryl Pt complexes by B-N coupling via ClSiMe elimination. A subsequent intramolecular ClSiMe elimination from the tBu-derivative leads to cyclization of the BNBN unit, forming a unique 1,3,2,4-diazadiboretidin-2-yl ligand. In contrast, the analogous reaction with Br BN(SiMe ) leads, via a twofold BrSiMe elimination, to a Pt A-frame complex bridged by a linear BNBN isostere of butatriene. Structural and computational data confirm π electron delocalization over the entire BNBN unit.

摘要

[μ-(二甲基膦亚甲基)铂(降冰片烯)](dmpm = 双(二甲基膦基)甲烷,nbe = 降冰片烯)与Cl BNR(SiMe )(R = tBu,SiMe )按1:2反应,通过消除ClSiMe 经B-N偶联生成不对称的(氨基硼基)氨基硼基铂 配合物。随后从叔丁基衍生物中进行分子内ClSiMe 消除导致BNBN单元环化,形成独特的1,3,2,4-二氮杂二硼杂环丁烷-2-基配体。相比之下,与Br BN(SiMe )的类似反应通过两次消除BrSiMe ,生成由丁三烯的线性BNBN等电子体桥连的铂 A 型配合物。结构和计算数据证实了整个BNBN单元上的π电子离域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/cf7725930fbf/ANIE-60-16864-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/329b00fe00b0/ANIE-60-16864-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/01f35f64a325/ANIE-60-16864-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/140399bb8d65/ANIE-60-16864-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/cf7725930fbf/ANIE-60-16864-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/8effb122a3a6/ANIE-60-16864-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/e114d55e66b4/ANIE-60-16864-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/2ee18f236295/ANIE-60-16864-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/c5024d782a01/ANIE-60-16864-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/329b00fe00b0/ANIE-60-16864-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/01f35f64a325/ANIE-60-16864-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/140399bb8d65/ANIE-60-16864-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/32c6/8362192/cf7725930fbf/ANIE-60-16864-g008.jpg

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