title: Synthesis of vanadium-alkylidene complexes and their use as catalysts for ring opening metathesis polymerization.
abstract: Reported examples for synthesis of vanadium-alkylidene complexes and some selected reactions have been summarized. (Imido)vanadium(v)-alkylidene complexes exhibit catalytic activities for ring-opening metathesis polymerization (ROMP) of cyclic olefins; V(CHSiMe3)(N-2,6-Cl2C6H3)(OC6F5)(PMe3)2exhibited remarkable catalytic activities for ROMPs of norbornene derivatives, polymerized cyclopentene and cis-cyclooctene. Highly cis-specific (living) ROMPs of norbornene have been achieved by V(CHSiMe3)(N-2,6-X2C6H3)[OC(CF3)3](PMe3)2(X = H, Cl), and the activity increased at high temperature (50 and 80 °C) without a decrease in cis specificity (98%) in the presence of PMe3.
authors.affiliation: Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan. ktnomura@tmu.ac.jp.
authors.forename: Kotohiro
authors.identifier: http://orcid.org/0000-0003-3661-6328
authors.initials: K
authors.lastname: Nomura
authors.affiliation: Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan. ktnomura@tmu.ac.jp.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Hou