Highly selective propylene dimerization catalyzed by C1‐symmetric zirconocene complexes |
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| Authors: | Wenzhong Huang Yan Wang Haiyan Ma Jiling Huang |
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| Affiliation: | Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai, People's Republic of China |
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| Abstract: | A series of ethylene‐bridged C1‐symmetric ansa‐(3‐R‐indenyl)(fluorenyl) zirconocene complexes ( 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ) incorporating a pendant arene substituent on the 3‐position of indenyl ring have been synthesized. The structure of complex 4 was further confirmed by X‐ray diffraction analysis. When activated with methylaluminoxane, four sterically less encumbered complexes 1 , 2 , 4 and 5 could catalyze the dimerization of propylene in toluene at 100°C to afford 2‐methyl‐1‐pentene with high selectivities up to 95.7–98.4% and moderate activities of 2.00 × 104 to 7.89 × 104 g (mol‐Zr?h)?1. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | zirconocene propylene dimerization |
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