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通过多重[2+2]环加成反应的模板控制合成聚咪唑鎓盐

Template-Controlled Synthesis of Polyimidazolium Salts by Multiple [2+2] Cycloaddition Reactions.

作者信息

Dobbe Christian B, Gutiérrez-Blanco Ana, Tan Tristan T Y, Hepp Alexander, Poyatos Macarena, Peris Eduardo, Hahn F Ekkehardt

机构信息

Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, 48149, Münster, Germany.

Institute of Advanced Materials (INAM), Universitat Jaume I, Avda. Vicente Sos Baynat s/n, Castellon, 12071, Spain.

出版信息

Chemistry. 2020 Sep 4;26(50):11565-11570. doi: 10.1002/chem.202001515. Epub 2020 Aug 6.

DOI:10.1002/chem.202001515
PMID:32237240
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7540564/
Abstract

The tetrakisimidazolium salt H -2(Br) , featuring a central benzene linker and 1,2,4,5-(nBu-imidazolium-Ph-CH=CH-) substituents reacts with Ag O in the presence of AgBF to yield the tetranuclear, oktakis-NHC assembly 3 . Cation [3] features four pairs of olefins from the two tetrakis-NHC ligands perfectly arranged for a subsequent [2+2] cycloaddition. Irradiation of 3 with a high pressure Hg lamp connects the two tetra-NHC ligands through four cyclobutane linkers to give compound 4 . Removal of the template metals yields the novel oktakisimidazolium salt H -5(BF ) . The tetrakisimidazolium salt H -2(BF ) and the oktakisimidazolium salt H -5(BF ) have been used as multivalent anion receptors and their anion binding properties towards six different anions have been compared.

摘要

具有中心苯连接基和1,2,4,5-(正丁基-咪唑鎓-苯基-乙烯基-)取代基的四(咪唑鎓)盐H -2(Br)在AgBF存在下与Ag₂O反应，生成四核八(氮杂环卡宾)组装体3₂。阳离子[3]具有来自两个四(氮杂环卡宾)配体的四对烯烃，它们完美排列以进行后续的[2+2]环加成反应。用高压汞灯照射3₂，通过四个环丁烷连接基连接两个四(氮杂环卡宾)配体，得到化合物4₂。去除模板金属得到新型八(咪唑鎓)盐H -5(BF₄)₂。四(咪唑鎓)盐H -2(BF₄)₂和八(咪唑鎓)盐H -5(BF₄)₂已被用作多价阴离子受体，并比较了它们对六种不同阴离子的阴离子结合性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/8ffd4e9d6869/CHEM-26-11565-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/037a5efd8743/CHEM-26-11565-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/e14980108560/CHEM-26-11565-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/53bc869dfb54/CHEM-26-11565-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/37d63a734b2e/CHEM-26-11565-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/f765ceace17f/CHEM-26-11565-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/8ffd4e9d6869/CHEM-26-11565-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/037a5efd8743/CHEM-26-11565-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/e14980108560/CHEM-26-11565-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/53bc869dfb54/CHEM-26-11565-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/37d63a734b2e/CHEM-26-11565-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/f765ceace17f/CHEM-26-11565-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cb7/7540564/8ffd4e9d6869/CHEM-26-11565-g004.jpg

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