期刊
ORGANOMETALLICS
卷 36, 期 16, 页码 3009-3012出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.7b00415
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资金
- National Natural Science Foundation of China [21174026]
- Program for New Century Excellent Talents in University
- Program for Professor of Special Appointment (Eastern Scholar) at the Shanghai Institutions of Higher Learning
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation
- Fundamental Research Funds for the Central Universities
ansa-Dimethylsilylene(fluorenyl)(amido)titanium complexes bearing various electron-donating substituents are synthesized and applied to propylene polymerization by the use of MMAO/2,6-di-tert-butyl-4-methylphenol as a cocatalyst. The complexes containing adamantylamido ligands (1a,b) show unexpectedly high activity (31150 kg of polymer (mol of Ti)(-1) h(-1)) with a low Al:Ti ratio of 20. The catalysts also promote syndiotactic-specific living polymerization to produce propylene-ethylene block copolymers.
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