2015 Fiscal Year Final Research Report
Development of Stereospecific Living Radical Polymerization
| Project/Area Number |
26620084
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Synthetic chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 立体規則的重合 / ラジカル重合 / 立体選択的反応 / ルイス酸 / イソタクチックポリアクリレート / リビングラジカル重合 |
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| Outline of Final Research Achievements |
A new stereospecific radical polymerization reaction has been developed. While the conventional methods use on the penultimate effect, the current method relies on the auxiliary control at the propagating polymer-chain end. Lewis acid (MgBr2)-catalyzed radical polymerization of acrylimides bearing chiral oxazolidinones gave highly isotactic polyacrylimides with up to >99% meso tetrad (mmm) selectivity. Polymerization in the absence of Lewis acid gave atactic polymers with 80% racemo diad (r) selectivity; the selectivity was deliberately tuned from 80% r to >99% mmm by varying the polymerization conditions. The polyacrylimide was quantitatively converted to corresponding polyacrylates while preserving the stereoregularity, thus providing a general method for the synthesis of atactic to isotactic polyacrylates.
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| Free Research Field |
高分子合成
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