P-61 位置選択的置換基を有するカードランエステルの合成と物性評
書誌事項
- タイトル別名
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- P-61 Synthesis and Characterization of regioselectively substituted curdlan esters
抄録
<p>Regioselectively substituted curdlan esters were synthesized by protecting the C6 primary hydroxyl group with a triphenylmethyl group followed by the acylation of the secondary hydroxyl groups at C2 and C4. The subsequent detritylation of C6 trityl group under acidic conditions revealed an unexpected acyl migration from C4 to C6. The rate of this migration was found to be dependent on the length of the acyl group, leading to the proposal of a new mechanism for this transformation. Based on these results, we synthesized 2,6-di-O-acetyl-4-O-propionyl-curdlan, which was fully characterized by 1H NMR, 13C NMR, COSY, HSQC and HMBC analyses. Thermogravimetric analysis and differential scanning calorimetry measurements revealed that the regioselective esterification to curdlan promoted its crystallization compared with randomly mixed ester derivatives.</p>
収録刊行物
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- バイオマス科学会議発表論文集
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バイオマス科学会議発表論文集 12 (0), 171-172, 2017
一般社団法人 日本エネルギー学会
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詳細情報 詳細情報について
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- CRID
- 1390282680763740544
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- NII論文ID
- 130005296178
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- ISSN
- 24238341
- 24238333
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可