Radical polymerization of novel <i>N</i>
-substituted-<i>N</i>
-vinylformamide derivatives with bulky chiral substitutents
作者:Hiroharu Ajiro、Mitsuru Akashi
DOI:10.1002/pola.25012
日期:2012.1.1
A series of novel N‐substituted‐N‐vinylformamides were synthesized, and the effect of bulky substituents on their radical polymerizability and polymer structure were investigated. N‐(p‐Methoxybenzyl)‐N‐vinylformamide (3) and N‐cyclohexylmethyl‐N‐vinylformamide (4) generated polymers, while it was known that their N‐vinylacetamide derivatives did not. 1H NMR and 13C NMR analyses of poly(3), however
合成了一系列新型的N-取代的-N-乙烯基甲酰胺,并研究了大取代基对其自由基聚合性和聚合物结构的影响。N-(对甲氧基苄基)-N-乙烯基甲酰胺(3)和N-环己基甲基-N-乙烯基甲酰胺(4)生成聚合物,但已知它们的N-乙烯基乙酰胺衍生物没有。1 H NMR和13的聚C NMR分析(3),但是,揭示了在各种聚合条件之间几乎没有差异,这表明取代基的蓬松度不影响聚合物结构。另一方面,通过N-(S)-2-甲基丁基-N-乙烯基甲酰胺((S)-5)和N-(S)-2,3-二羟丙基-的自由基聚合获得的手性聚合物。N-乙烯基甲酰胺((S)‐ 7)在0°C下显示的光谱图谱比在更高聚合温度下获得的谱图更清晰。此外,当聚合温度低时,它们对圆二色性的正棉花效应强度增加,表明(S)-5和(S)-7的取代基膨松度影响聚合物结构,例如其立构规整度和区域规整度。©2011 Wiley Periodicals,Inc. J Polym