Syntheses,structures and catalytic activity for Friedel-Crafts reactions of substituted indenyl rhenium carbonyl complexes |
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Authors: | Zhihong Ma Xinli Zhang Hong Wang Zhangang Han Xuezhong Zheng |
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Institution: | 1. College of Basic Medicine, Hebei Medical University, Shijiazhuang, PR Chinamazhihong-1973@163.com;3. The College of Chemistry &4. Material Science, Hebei Normal University, Shijiazhuang, PR China;5. Hebei Institute of Food Quality Supervision Inspection and Research, Shijiazhuang, PR China |
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Abstract: | The complexes (η5-C9H6R)Re(CO)3] R = nBu (8), tBu (9), CH(CH2)4 (10), Ph (11), Bz (12), 4-methoxyphenyl (13), 4-chlorophenyl (14)] were synthesized by refluxing substituted indenyl ligands C9H7R] R = nBu (1), tBu (2), CH(CH2)4 (3), Ph (4), Bz (5), 4-methoxyphenyl (6), 4-chlorophenyl (7)], and Re2(CO)10 in decalin. The molecular structures of 9, 10, 12, and 13 were determined by X-ray diffraction analysis. These four crystals have similar molecular structures of the mononuclear carbonyl complex. In each of these molecules, Re is η5-coordinated to the five-membered ring of the indenyl group. Complexes 8–14 have catalytic activity for Friedel-Crafts reactions of aromatic compounds with a variety of alkylation and acylation reagents. Compared with traditional catalysts, these mononuclear metal carbonyl complexes have obvious advantages such as high activities, mild reaction conditions, high selectivity, and environmentally friendly chemistry. |
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Keywords: | Synthesis mononuclear rhenium carbonyl complex indenyl Friedel-Crafts reaction |
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