Cationic ring-opening polymerization of novel 1,3-dehydroadamantanes with various alkyl substituents: Synthesis of thermally stable poly(1,3-adamantane)s
作者:Sotaro Inomata、Yusuke Harada、Yuya Nakamura、Yosuke Uehara、Takashi Ishizone
DOI:10.1002/pola.26820
日期:2013.10
inverted carbon–carbon bonds in 4–8 proceeded to afford corresponding poly(1,3‐adamantane)s in good to quantitative yields. Poly(4–8)s possessing alkyl substituents were soluble in 1,2‐dichlorobenzene, although a nonsubstituted poly(1,3‐adamantane) was not soluble in any organic solvent. In particular, poly(8) exhibited the highest molecular weight at around 7500 g mol−1 and showed excellent solubility in
5-烷基或5,7-二烷基-1,3-脱氢金刚烷的阳离子开环聚合反应,例如5-己基(4),5-辛基(5),5-丁基7-异丁基((6),5-乙基-7-己基(7)和5-丁基-7-己基-1,3-脱氢金刚烷(8)与超布朗斯台德酸(例如三氟甲烷磺酸或三氟甲烷磺酰亚胺)在CH 2中进行Cl 2或正庚烷。反向碳-碳键在4-8中的开环聚合反应以良好的定量产量提供了相应的聚(1,3-金刚烷)。聚(4–8尽管未取代的聚(1,3-金刚烷)不溶于任何有机溶剂,但具有烷基取代基的s可溶于1,2-二氯苯。特别地,聚(8)在约7500g mol -1处表现出最高的分子量,并且在常见的有机溶剂如THF,CHCl 3,苯和己烷中显示出优异的溶解性。所得的含金刚烷-1,3-二基键的聚(4-8)表现出良好的热稳定性,在400°C范围内观察到10%的失重温度(T 10)。©2013 Wiley Periodicals,Inc. J.