Syntheses, structures, and catalytic activity in Friedel–Crafts acylations of substituted tetramethylcyclopentadienyl molybdenum carbonyl complexes
作者:Tong Li、Xin-Long Yan、Zhan-Wei Li、Zhi-Hong Ma、Su-Zhen Li、Zhan-Gang Han、Xue-Zhong Zheng、Jin Lin
DOI:10.1007/s11243-018-0217-5
日期:2018.5
of dinuclear molybdenum carbonyl complexes [(η5-C5Me4R)Mo(CO)3]2 [R = tBu (1), Ph (2), CH2CH2C(CH3)3 (3)], [(η5-C5MetBu)Mo(μ-CO)2]2 (4)], and [(η5-C5Me4)tBu]2Mo2O4(μ-O) (5)], respectively. Complexes 1–5 were characterized by elemental analysis, IR, 1H NMR, and 13C NMR spectroscopy. In addition, their crystal structures were determined by X-ray crystal diffraction analysis. The catalytic activities of
取代的四甲基环戊二烯 [C5HMe4R] [R = tBu, Ph, CH2CH2C(CH3)3] 与 Mo(CO)3(CH3CN)3 在回流的二甲苯中反应得到一系列双核钼羰基配合物 [(η5-C5Me4R)Mo( CO)3]2 [R = tBu (1), Ph (2), CH2CH2C(CH3)3 (3)], [(η5-C5MetBu)Mo(μ-CO)2]2 (4)] 和 [ (η5-C5Me4)tBu]2Mo2O4(μ-O) (5)]。通过元素分析、IR、1H NMR 和 13C NMR 光谱对配合物 1-5 进行了表征。此外,通过X射线晶体衍射分析确定了它们的晶体结构。还研究了在邻氯苯醌存在下配合物 1-3 在 Friedel-Crafts 酰化中的催化活性;反应在温和的条件下完成,以中等产率得到相应的产物。