Synthesis of New Sequence-Ordered Polymers by Stepwise Insertion of Epoxides into Polymer Backbone
| Project/Area Number |
09650983
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
高分子合成
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| Research Institution | Kanagawa University |
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Principal Investigator |
KAMEYAMA Atsushi Kanagawa University, Faculty of Engineering, Research Associate, 工学部, 助手 (80231265)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1998: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1997: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Keywords | Sequence-Ordered Polymer / Insertion Reaction / Transformation of Polymer Backbone / Epoxides / Poly(silyl ether) / Poly(phosphonate) / ポリ(アリールホスホネート) / オキシラン類 |
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| Research Abstract |
The synthesis of ordered polymers with multiple sequence on the basis of stepwise transformation of polymer backbones was investigated.
In 1997, insertion reaction of epoxides into poly(arylsilyl ether) (P-1) using tetrabutyiphosphonium chloride (TBPC) in toluene for 48 h proceeded with 100 % conversion to produce sequence-ordered polymers. Poly(aryl phosphonate) (P-2) were prepared by polycondensation of bisphenols with phenylphosphonic dichioride, then the terminal phenolic hydroxy groups of P-2 were capped with acetyl group to provide the starting polymer (P-3). The insertion reaction of glycidyl phenyl ether (GPE) into P-3 (M_n : 3900, M_w/M_n : 1.42) was carried out under various reaction conditions. When the reaction was carried out using dibenzo- 18-crown-6-ether/CsBr complex as a catalyst in chlorobenzene at 130= for 96 h, the corresponding poly(alkyl phosphonate) was obtained in quantitative yield. It was also found that the number-average molecular weight (M_n : 7400, M_w/M_n : 1.63) of the obtained polymer was higher than that of the prepolymer. Furthermore, H-NMR and ^<13>C-NMR spectra of the resulting polymer proved that the insertion re action proceeded quantitatively and regioselectively to give the sequence-ordered poly(alkyl phosphonate).
In 1998, to achieve stepwise transformation of polymer backbone, the reaction of trifluoropropyrene oxide (TFPO) with bis(chlorophenyl)phenylphosphonate (BCPP) was investigated as a model reaction. The reaction proceeded using dibenzo-18-crown-6-ether/CsF complex in chlorobenzene at 70= for 72 h to provide the targeted product with 100 % of conversion. The obtained product would be transformed using insertion of GPE to produce the corresponding product with multiple sequence.
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Report
(3 results)
Research Products
(15 results)
