• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Coordinating effect in ring-opening polymerization of epsilon-caprolactone using aluminum complexes bearing bisphenolate as catalysts
【24h】

Coordinating effect in ring-opening polymerization of epsilon-caprolactone using aluminum complexes bearing bisphenolate as catalysts

机译：使用双酚酸盐作为催化剂的铝合金复合物开环ε-己内酮开环聚合的协调效应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of Al complexes bearing diphenolate ligands was synthesized and their application for the ring-opening polymerization of epsilon-caprolactone was studied. Positional variation of the substituent on the aryl ring of the RC*H(4,6-di-t-butylphenol)(2) ligand was shown to have a considerable influence on the catalysis result. Complexes with a ortho-substituent showed greater catalytic activity than those with a para-substituent. Substitutions of an aryl moiety by H or methyl groups resulted in the catalytic activity falling between that of the ortho-substitution Al complexes and that of the para ones. Our results demonstrate that the coordinated functional group in the ortho-position of the phenyl ring could increase the catalytic activity. Moreover, X-rays of the structure and DFT analysis revealed that the coordinated functional group in the ortho-position could bridge two Al centers resulting in the transformation of a dinuclear Al complex with bridging benzyl alkoxide into a complex with terminal benzyl alkoxide, further promoting the efficacy of the initiator.
机译：已经合成了一系列轴承二酚酸酯配体的Al络合物，研究了它们对ε-己内酯的开环聚合的应用。 RC * H（4,6-二叔丁基苯酚）（2）配体的芳基环上的取代基的位置变化显示对催化作用具有相当大的影响。具有邻氨基取代基的复合物显示出比用对取代基的催化活性更大。 H或甲基的芳基部分的取代导致催化活性落在邻替代Al络合物的催化活性与第比例的催化活性。我们的结果表明，苯环的邻位中的协调官能团可以增加催化活性。此外，结构和DFT分析的X射线显示，邻位中的协调官能团可以桥接两个Al中心，导致二核Al络合物的转化与桥接苄基醇盐加入到与末端苄基醇盐的复合物中，进一步促进引发剂的功效。

著录项

  • 来源
    《RSC Advances》 |2015年第100期|共9页
  • 作者

    Chen Hsing-Yin; Lee Ying-Hsien; Chiang Michael Y.; Lu Wei-Yi; Tseng Hsi-Ching; Tsai Hsin-Yi; Chen Yu-Hsieh; Lai Yi-Chun; Chen Hsuan-Ying;

  • 作者单位

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Natl Chung Hsing Univ Dept Chem Taichung 402 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

    Kaohsiung Med Univ Dept Med &

    Appl Chem Kaohsiung 80708 Taiwan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号