2-(3-ethylpentyl)-2-oxazoline | 1428946-74-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑啉类
• 英文名称: 2-(3-ethylpentyl)-2-oxazoline
• 英文别名: 2-(3-Ethylpentyl)-4,5-dihydro-1,3-oxazole；2-(3-ethylpentyl)-4,5-dihydro-1,3-oxazole
• CAS: 1428946-74-0
• 化学式: C₁₀H₁₉NO
• 分子量: 169.267
• InChiKey: MZMWPAOMBUVBCD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  21.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-甲基-2-恶唑啉 、 2-乙基溴代丁烷 在 正丁基锂 、 四甲基乙二胺 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 26.0h， 以29%的产率得到2-(3-ethylpentyl)-2-oxazoline
  参考文献：
  名称：

  A systematic investigation of the effect of side chain branching on the glass transition temperature and mechanical properties of aliphatic (co-)poly(2-oxazoline)s

  摘要：

  The synthesis of a new branched 2-oxazoline monomer, namely 2-(3-ethylpentyl)-2-oxazoline is described. Microwave-assisted cationic ring-opening polymerization allows the synthesis of well-defined homopolymers as well as copolymers when copolymerized with 2-ethyl-2-oxazoline (EtOx). The systems obtained are investigated with regard to their thermal and mechanical properties. In order to elucidate structure-property correlations, these copolymers are compared to copolymers of EtOx with two other branched monomers, namely 2-(1-ethylpentyl)-2-oxazoline and 2-(3-ethylheptyl)-2-oxazoline comprising a different branching position or length of the main side chain, respectively. It is observed that the influence of the branching position on the glass transition temperature and mechanical properties is significantly higher than the length of the side chain. Furthermore, copolymerizations with EtOx are presented which enable the alteration of the thermal and mechanical properties showing a linear decrease of the glass transition temperatures as well as a decrease of the elastic modulus with increasing weight percentage of the branched monomers. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.polymer.2013.01.016

文献信息

• A systematic investigation of the effect of side chain branching on the glass transition temperature and mechanical properties of aliphatic (co-)poly(2-oxazoline)s
  作者：Kristian Kempe、Erik F.-J. Rettler、Renzo M. Paulus、Anette Kuse、Richard Hoogenboom、Ulrich S. Schubert

  DOI：10.1016/j.polymer.2013.01.016

  日期：2013.4

  The synthesis of a new branched 2-oxazoline monomer, namely 2-(3-ethylpentyl)-2-oxazoline is described. Microwave-assisted cationic ring-opening polymerization allows the synthesis of well-defined homopolymers as well as copolymers when copolymerized with 2-ethyl-2-oxazoline (EtOx). The systems obtained are investigated with regard to their thermal and mechanical properties. In order to elucidate structure-property correlations, these copolymers are compared to copolymers of EtOx with two other branched monomers, namely 2-(1-ethylpentyl)-2-oxazoline and 2-(3-ethylheptyl)-2-oxazoline comprising a different branching position or length of the main side chain, respectively. It is observed that the influence of the branching position on the glass transition temperature and mechanical properties is significantly higher than the length of the side chain. Furthermore, copolymerizations with EtOx are presented which enable the alteration of the thermal and mechanical properties showing a linear decrease of the glass transition temperatures as well as a decrease of the elastic modulus with increasing weight percentage of the branched monomers. (C) 2013 Elsevier Ltd. All rights reserved.