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Hokkaido University Collection of Scholarly and Academic Papers >
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Synthesis of 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, and 12-armed star-shaped poly(styrene oxide) Ru(II) complexes by a click-to-chelate approach
| Title: | Synthesis of 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, and 12-armed star-shaped poly(styrene oxide) Ru(II) complexes by a click-to-chelate approach |
| Authors: | Chen, Yougen Browse this author | | Xiao, Nao Browse this author | | Satoh, Toshifumi Browse this author →KAKEN DB | | Kakuchi, Toyoji Browse this author →KAKEN DB |
| Issue Date: | 7-Sep-2014 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Polymer Chemistry |
| Volume: | 5 |
| Issue: | 17 |
| Start Page: | 4993 |
| End Page: | 5001 |
| Publisher DOI: | 10.1039/c4py00314d |
| Abstract: | This study describes the first convenient preparation of 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, and 12-armed star-shaped poly(styrene oxide) (PSO) Ru(II) complexes using a click-to-chelate approach. This approach involves the combination of the click reaction and stepwise chelating reactions of Ru(II)(DMSO)(4)Cl-2 with macroligands, 2-(1-PSOn-1,2,3-triazol-4-yl)pyridine (PSOn-tapy) or 2-(1-PSOm-1,2,3-triazol-4-yl)-6-(1-PSOn-1,2,3-triazol-4-yl)pyridine (PSOm-bitapy-PSOn) (m, n = 1, 2, or 3). Click chemistry was used to prepare the PSOn-tapy and PSOm-bitapy-PSOn macroligands. More specifically, PSOn-tapy was prepared by reacting the azido-functionalized PSOn (PSOn-N-3) with excess 2-ethynylpridine. On the other hand, PSOm-bitapy-PSOn was obtained by the click reaction of excess PSOn-N-3 with 2,6-diethynylpridine to afford (PSOn)(2)-bitapy when m equals n, and by the stepwise click reactions of PSOm-N-3 and PSOn-N-3 with 2,6-diethynylpridine to produce PSOm-bitapy-PSOn when m is not equal to n. In order to obtain these polymer-substituted macroligands, PSOn-N-3 was initially synthesized by the living ring-opening polymerization (ROP) of styrene oxide (SO) using t-Bu-P-4 as a catalyst and the azido-functionalized mono- or multi-hydroxyl compounds, e.g., 6-azido-1-hexanol, 2-((6-azidohexyloxy)methyl)-2-methylpropane-1,3-diol (1) and 2-((6-azidohexyloxy)methyl)-2-(hydroxymethyl)propane-1,3-diol (2) as initiators. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/58419 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 覺知 豊次
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