Reactivity of Lutetacyclopropene toward Benzyl, Benzoyl, and Trimethylsilyl Nitriles Affording Diversified Lutetium Complexes
作者:Ze-Jie Lv、Miaomiao Zhu、Wei Liu、Zhengqi Chai、Junnian Wei、Wen-Xiong Zhang
DOI:10.1021/acs.organomet.1c00567
日期:2021.12.13
alkyl and aryl nitriles has been extensively studied, their reactivity toward other types of nitriles, e.g., benzyl and benzoyl nitriles, that often behave multifunctionally was rarely explored. Herein, we demonstrated the unique reactivity of lutetacyclopropene 1 with benzyl, benzoyl, and trimethylsilyl nitriles. Treatment of 1 with 2 equiv of ArCH2CN (Ar = Ph or 2,6-Me2C6H3) led to acyclic lutetium complexes
尽管金属环丙烯对烷基和芳基腈的反应已得到广泛研究,但很少探索它们对其他类型的腈(例如苄基和苯甲酰基腈)的反应性,这些腈通常具有多功能性。在此,我们展示了 lutetacyclopropene 1与苄基、苯甲酰基和三甲基甲硅烷基腈的独特反应性。的治疗1与2当量弓2 CN(AR =苯基或2,6--ME 2 ç 6 ħ 3导致无环镥复合物)2与两个keteniminate和乙烯基烯酰胺配体。黄体烯胺中间体4 的分离表明形成了2通过三个关键步骤进行:将 C≡N 键初始插入 Lu-C sp2键中,得到氮杂环戊二烯中间体3,通过 1,3-H 移位产生3 的互变异构化提供4,以及随后4和 ArCH 2 CN之间的分子间质子转移。然而,当1与苯甲酰基或三甲基甲硅烷基腈反应时,得到双异氰化物配合物5,释放出 1,2-二苯甲酰基-1,2-二苯基乙烯或 1,2-二(三甲基甲硅烷基)-1,2-分别为二苯基乙烯。2和5的形成