论文部分内容阅读
在低温下用三氟化硼乙醚催化１，４－脱水－２，３－二－氧－（对迭氮基苯甲基）－α－Ｄ－核糖（ＡＤＡＢＲ）的阳离子选择性开环聚合反应，首次合成了具有１，５－开环α－结构的聚合物。单体ＡＤＡＢＲ由１，４－脱水－α－Ｄ－核糖在ＤＭＦ溶剂中与对溴甲基迭氮基苯反应获得。聚合物的结构由比旋光度、１Ｈ－ＮＭＲ和１３Ｃ－ＮＭＲ及ＩＲ谱确认。用五氟化锑为催化剂则得到了同时含有α－呋喃单元和β－吡喃单元混合结构的聚合物。研究了催化剂及其用量、聚合反应时间对聚合反应的影响，讨论了聚合反应机理。为研究１，４－脱水－２，３－二－氧－（对迭氮基苯甲基）－α－Ｄ－吡喃核糖的聚合活性以及便于测试迭氮基的含量对聚合物光刻性能的影响，还初步研究了单体ＡＤＡＢＲ与１，４－脱水－２，３－二－氧－苯甲基－α－Ｄ－吡喃核糖（ＡＤＢＲ）的共聚反应。从共聚物的结构分析可以认定共聚物具有１，５－α－结构，并且单体１，４－脱水－２，３－二－氧－苯甲基－α－Ｄ－吡喃核糖在实验条件下具有较高的活性。
Cation-selective ring-opening polymerization of 1,4-anhydro-2,3-di-O- (p-azidobenzyl) -α-D-ribose (ADABR) with boron trifluoride diethyl ether at low temperature , For the first time synthesized a polymer with 1,5-ring-opening α-structure. Monomeric ADABR is obtained from the reaction of 1,4-anhydro-α-D-ribose with p-bromomethyl azidobenzene in DMF solvent. The structure of the polymer was confirmed by specific rotation, 1H-NMR and 13C-NMR and IR spectra. Using antimony pentafluoride as a catalyst, a polymer containing a mixed structure of α-furan units and β-pyran units was obtained. The effects of catalyst amount and polymerization time on the polymerization were investigated. The polymerization mechanism was also discussed. To investigate the polymerization activity of 1,4-anhydro-2,3-di-oxy- (p-azidobenzyl) -α-D-glucopyranose and to test the effect of the amount of azide on the photolithographic properties of the polymer , The preliminary copolymerization of monomeric ADABR with 1,4-anhydro-2,3-dioxy-benzyl-α-D-ribopyranose (ADBR) From the structural analysis of the copolymer, it can be confirmed that the copolymer has a 1,5-α-structure, and the monomer 1,4-anhydro-2,3-dioxy-benzyl-α-D-ribopyranose under the experimental conditions Under the higher activity.