Title:Ruthenium-catalyzed Olefin Metathesis in Water using Thermo-responsive Diblock
Copolymer Micelles
Volume: 27
Issue: 15
Author(s): Noriyuki Suzuki*, Ken Watanabe, Chirika Takahashi, Yuko Takeoka and Masahiro Rikukawa
Affiliation:
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
Keywords:
Olefin metathesis, ruthenium catalysts, poly(N-isopropylacrylamide), thermo-responsive polymer, reaction in water, copolymer.
Abstract: Ruthenium-catalyzed olefin metathesis reactions were conducted in water with thermoresponsive
block copolymers forming micelles. The block copolymers were prepared by living radical
polymerization and consisted of a thermo-responsive and hydrophilic segments. The former
segment included poly(N-isopropylacrylamide) or poly(N,N-diethylacrylamide), and the latter
poly(sodium 4-styrene sulfonate), poly(sodium 2-acrylamido-2-methylpropanesulfonate) or
poly(ethylene glycol). Homometathesis, cross-metathesis and ring-closing metathesis reactions proceeded
to afford the products in moderate to good yields. Extraction efficiency from the reaction
mixture was also studied.