期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 137, 期 14, 页码 4662-4665出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b02149
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [26105003]
- Tokyo Metropolitan government
- Grants-in-Aid for Scientific Research [26105003, 26105001] Funding Source: KAKEN
(Arylimido)vanadium(V)-alkylidene complexes, V(CHSiMe3)(N-2,6-X2C6H3)(OC6F5)(PMe3)(2) [X = Me (2), Cl (4)], exhibited remarkable catalytic activities for ring-opening metathesis polymerization (ROMP) of norbornene, and the ROMP by 2 proceeded in a living manner, affording ultrahigh molecular weight polymers. Cis-specific ROMP was achieved with the alkoxo analogues, V(CHSiMe3)(N-2,6-X2C6H3)[OC(CH3)(CF3)(2)]-(PMe3)(2) [X = Me (5), Cl (6)]. Both the activity and the selectivity increased upon addition of PMe3, even at 50 degrees C.
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