2013年3月
Helix-sense-selective Polymerization of Achiral Acetylene Monomer Catalyzed by Rh Zwitterionic Complexes with Tethered Chiral Amino and Ether Groups
CHEMISTRY LETTERS
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- 巻
- 42
- 号
- 3
- 開始ページ
- 278
- 終了ページ
- 280
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1246/cl.2013.278
- 出版者・発行元
- CHEMICAL SOC JAPAN
Zwitterionic rhodium (Rh) complexes with tethered chiral amino and ether groups were synthesized by the reaction of [(C2H4)(2)RhCl](2) with the 2,5-norbornadiene tether, (CH2)(4)R [2: R = (R)-NHCH(CH3)Ph, 3: (R)-OCH(CH3)Ph], followed by exchange of Cl with BPh4. The resultant Rh complexes, 2 and 3, catalyzed the polymerization of 4-dodecyloxy-3,5-bis(hydroxymethyl)phenylacetylene (1) to afford polymers [poly(1)s] with number-average molecular weights of 16000 and 82000, respectively. The poly(1)s showed clear circular dichroism resulting from their polyacetylene backbones, which indicates the formation of predominantly one-handed helical structures.
- リンク情報
- ID情報
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- DOI : 10.1246/cl.2013.278
- ISSN : 0366-7022
- eISSN : 1348-0715
- Web of Science ID : WOS:000316841300027