| STUDY ON CATIONIC RING-OPENING COPOLYMERIZATION OF 1,4-ANHYDRO-2,3-DI-O-BENZYL-α-D-RIBOPYRANOSE WITH 1,4-ANHYDRO-2,3-O-ISOPROPYLIDENE-α-D-RIBOPYRANOSE |
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| 引用本文： | 吴承佩,潘才元,瓜生敏之.STUDY ON CATIONIC RING-OPENING COPOLYMERIZATION OF 1,4-ANHYDRO-2,3-DI-O-BENZYL-α-D-RIBOPYRANOSE WITH 1,4-ANHYDRO-2,3-O-ISOPROPYLIDENE-α-D-RIBOPYRANOSE[J].高分子科学,1997,0(3):282-288. |
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| 作者姓名： | 吴承佩 潘才元 瓜生敏之 |
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| 作者单位： | Department of Materials Science and Engineering，University of Science and Technology of China，Hefei 230026，Department of Materials Science and Engineering，University of Science and Technology of China，Hefei 230026，Institute of Industrial Science，University of Tokyo，Roppongi，Minato-ku，Tokyo 106，Japan |
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| 摘 要： | Cationic ring-opening copolymerization of 1, 4-anhydro-2, 3-O-isopropylidene-α-D-ribo-pyranose (AIRP) with 1,4-anhydro-2,3-di-O-benzyl-α-D-ribopyranose (ADBR) preparedfrom D-ribose was studied. Copolymerization using SbCl_5 or BF_3 OEt_2 as catalyst atlow temperature gave stereoregular (1→4)β-D-ribofuranan (C-1 and C-4 ring cleavagesee Scheme 1) or (1→5) α-D-ribofuranan (C-1 and C-5 ring cleavage) respectively. Theeffects of catalysts, reaction time and temperatures on yield and stereoregularity of the ob-tained polymers were studied. Polymers were characterized by molecular weight, ~1HNMR,~(13)CNMR and optical rotation.
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| 收稿时间： | 1996-12-10 |
STUDY ON CATIONIC RING-OPENING COPOLYMERIZATION OF 1,4-ANHYDRO-2,3-DI-O-BENZYL-α-D-RIBOPYRANOSE WITH 1,4-ANHYDRO-2,3-O-ISOPROPYLIDENE-α-D-RIBOPYRANOSE |
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| WU Chengpei,PAN Caiyuan,Toshiyuki Uryu.STUDY ON CATIONIC RING-OPENING COPOLYMERIZATION OF 1,4-ANHYDRO-2,3-DI-O-BENZYL-α-D-RIBOPYRANOSE WITH 1,4-ANHYDRO-2,3-O-ISOPROPYLIDENE-α-D-RIBOPYRANOSE[J].Chinese Journal of Polymer Science,1997,0(3):282-288. |
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| Authors: | WU Chengpei PAN Caiyuan Toshiyuki Uryu |
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| Institution: | Department of Materials Science and Engineering; University of Science and Technology of China; Hefei 230026 Institute of Industrial Science; University of Tokyo; Roppongi; Minato-ko; Tokyo 106; Japan |
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| Abstract: | Cationic ring-opening copolymerization of 1, 4-anhydro-2, 3-O-isopropylidene-α-D-ribo-pyranose (AIRP) with 1,4-anhydro-2,3-di-O-benzyl-α-D-ribopyranose (ADBR) preparedfrom D-ribose was studied. Copolymerization using SbCl5 or BF3 OEt2 as catalyst atlow temperature gave stereoregular (1→4)β-D-ribofuranan (C-1 and C-4 ring cleavagesee Scheme 1) or (1→5) α-D-ribofuranan (C-1 and C-5 ring cleavage) respectively. Theeffects of catalysts, reaction time and temperatures on yield and stereoregularity of the ob-tained polymers were studied.Polymers were charaterized by molecular weight,1H NMR,13C NMR and optical rotation. |
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| Keywords: | 1 4-Anhydroribose derivatives Cationic ring-opening copolymerization Specific rotation Lewis acid catalysts |
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