| 학회 | 한국고분자학회 |
| 학술대회 | 2003년 봄 (04/11 ~ 04/12, 연세대학교) |
| 권호 | 28권 1호, p.101 |
| 발표분야 | 고분자 합성 |
| 제목 | Ring-opening copolymerization of 2-aryl-1-methylenecyclopropanes with carbon monoxide catalyzed by Pd(II) complexes |
| 초록 | The copolymerization of alkenes with carbon monoxide catalyzed by Pd complexes produces polyketones with regulated structures and/or molecular weights via alternating insertion of alkene and carbon monoxide into the Pd-C bond of the growing polyketone. Regioselectivity of insertion mode of the α-olefin to Pd-acyl bond governs the above sequence of the polymer. The reaction of strained cyclic olefins with CO, which involve ring-opening of the monomer, are thermodynamically favorable and would be expected to produce the polymers with novel structures. Only a few reports of such polymerization, however, have appeared in the literature. Alternating copolymerization of aziridine with CO catalyzed by Co complex serves as a prototype of a novel route for synthesis of poly-β-peptide. Copolymerization of methylenecyclopropane with CO catalyzed by a Pd-phosphine complex was recently shown to give the polyketone that contains a structural unit formed via ring-opening copolymerization as a minor component. We report herein that the ring-opening copolymerization of a strained cyclic olefins with carbon monoxide catalyzed by Pd complex bearing nitrogen ligands to afford the polyketones having unique enone structures formed via exclusive ring opening of the monomer during the polymer growth. Study on polymerization behavior and mechanism of the polymerization is also presented. |
| 저자 | 김선욱;Daisuke Takeuchi;Kohtaro Osakada |
| 소속 | Tokyo Institute of Technology;Tokyo Institute of Technology;Tokyo Institute of Technology |
| 키워드 | Pd(II) complexes; Carbon monoxide; Polyketone |
