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Bis-selenonium Cations as Bidentate Chalcogen Bond Donors in Catalysis
ACS Catalysis ( IF 11.3 ) Pub Date : 2021-09-30 , DOI: 10.1021/acscatal.1c03622 Xinxin He 1 , Xinyan Wang 1 , Ying-Lung Steve Tse 1 , Zhihai Ke 1 , Ying-Yeung Yeung 1
ACS Catalysis ( IF 11.3 ) Pub Date : 2021-09-30 , DOI: 10.1021/acscatal.1c03622 Xinxin He 1 , Xinyan Wang 1 , Ying-Lung Steve Tse 1 , Zhihai Ke 1 , Ying-Yeung Yeung 1
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Lewis acids are frequently employed in catalysis but they often suffer from high moisture sensitivity. In many reactions, catalysts are deactivated because of the problem that strong Lewis acids also bond to the products. In this research, hydrolytically stable bidentate Lewis acid catalysts derived from selenonium dicationic centers have been developed. The bis-selenonium catalysts are employed in the activation of imine and carbonyl groups in various transformations with good yields and selectivity. Lewis acidity of the bis-selenonium salts was found to be stronger than that of the monoselenonium systems, attributed to the synergistic effect of the two cationic selenonium centers. In addition, the bis-selenonium catalysts are not inhibited by strong bases or moisture.
中文翻译：
双硒阳离子作为催化中的双齿硫属元素键供体
路易斯酸经常用于催化，但它们通常具有高湿度敏感性。在许多反应中，由于强路易斯酸也与产物结合的问题，催化剂会失活。在这项研究中，已经开发了源自硒双阳离子中心的水解稳定的双齿路易斯酸催化剂。双硒催化剂用于在各种转化中以良好的收率和选择性活化亚胺和羰基。发现双硒鎓盐的路易斯酸度比单硒鎓体系强，这归因于两个阳离子硒鎓中心的协同作用。此外，双硒催化剂不受强碱或水分的抑制。
更新日期：2021-10-15
中文翻译：
双硒阳离子作为催化中的双齿硫属元素键供体
路易斯酸经常用于催化，但它们通常具有高湿度敏感性。在许多反应中，由于强路易斯酸也与产物结合的问题，催化剂会失活。在这项研究中，已经开发了源自硒双阳离子中心的水解稳定的双齿路易斯酸催化剂。双硒催化剂用于在各种转化中以良好的收率和选择性活化亚胺和羰基。发现双硒鎓盐的路易斯酸度比单硒鎓体系强，这归因于两个阳离子硒鎓中心的协同作用。此外，双硒催化剂不受强碱或水分的抑制。
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