| 학회 |
한국화학공학회 |
| 학술대회 |
2005년 가을 (10/21 ~ 10/22, 인하대학교) |
| 권호 |
11권 2호, p.1617 |
| 발표분야 |
Green Chemical Engineering |
| 제목 |
Cyclopolymerization of Dimethyl Dipropargylmalonate in Supercritical Carbon Dioxide to Give a Regular Polyene Containing Predominantly Five-Membered Rings |
| 초록 |
Recently, the literature reflected an intensive interest in metal-catalyzed olefin metathesis polymerization in supecritical CO2. Chemical interactions of supecritical CO2 with substrates and/or catalysts offer an as yet largely unexplored potential for activity and selectivity control. 1,6-Heptadiyne containing appropriate substituents at the 4-position is a very interesting example of substituted acetylenes, which can be susceptible to the ring-forming polymerization to give a new type of conjugated polymer backbone system. It is a very important task to prepare cyclopolymers that have only one size ring. Herein, we report for the first time the cyclopolymerization of dimethyl diproparglymalonate by MoCl5 catalysts (without using any well-defined alkylidene complexes as initiators) in supecritical CO2 which encourage regioselective addition of the first triple bond to an alkylidene to give highly regular polyene contaning one size rings in the polymer backbone as a consequence of chemical interaction of CO2 with the transition metal catalysts. |
| 저자 |
백지원, 허영재, 김화용, 이윤우
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| 소속 |
서울대 |
| 키워드 |
cyclopolymerization; dimethyl dipropargylmalonate; cupercritical carbon dioxide; polyene
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| E-Mail |
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| 원문파일 |
초록 보기 |
