Abstract
Reactions of the substituted tetramethylcyclopentadienes [C5HMe4R] [R = tBu, Ph, CH2CH2C(CH3)3] with Mo(CO)3(CH3CN)3 in refluxing xylene gave a series 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 complexes 1–3 in Friedel–Crafts acylation in the presence of o-chloranil has also been investigated; the reactions were achieved under mild conditions to give the corresponding products in moderate yields.
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The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 21372061), the Hebei Natural Science Foundation of China (No. B2017205006), and the Key Research Fund of Hebei Normal University (No. L2017Z02).
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Li, T., Yan, XL., Li, ZW. et al. Syntheses, structures, and catalytic activity in Friedel–Crafts acylations of substituted tetramethylcyclopentadienyl molybdenum carbonyl complexes. Transit Met Chem 43, 313–322 (2018). https://doi.org/10.1007/s11243-018-0217-5
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DOI: https://doi.org/10.1007/s11243-018-0217-5