...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry >The Synthesis of Some New Mono and bis(Crown Ether)s and Their Sodium Complexes. Tautomerism in o-Hydroxybenzo-15-crown-5 Schiff Bases as Studied by UV-VIS Spectrophotometry
【24h】

The Synthesis of Some New Mono and bis(Crown Ether)s and Their Sodium Complexes. Tautomerism in o-Hydroxybenzo-15-crown-5 Schiff Bases as Studied by UV-VIS Spectrophotometry

机译：一些新型单和双（冠醚）及其钠配合物的合成。紫外-可见分光光度法研究邻羟基苯并-15-冠-5席夫碱中的互变异构

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

New mono- and bis(crown ether) ligands have been synthesized by the condensation of the appropriate formylbenzo-15-crown-5 [(2) and (4)] with ethanolamine and 1,2-to[(4-aminophenoxy)methyl]benzene (6), respectively. The diamine (6), was prepared by the reaction of 1,2-bis (bromomethyl)benzene and p-nitrophenol in the presence of NaOH forming the dinitro compound (5) which is subsequently reduced to compound (6) using hydrazine hydrate and Pd/C. Homonuclear sodium complexes of the mono- and bis(crown ether) ligands have been prepared with sodium perchlorate. The UV-VIS spectra of o-hydroxycrown ether Schiff bases (7), (8), (7a), and (8a) have been studied in various solvents. The results indicate that bands observed at higher values than 400 nm to be the result of the keto-amine form of the ligands and complexes. All of the crown ether ligands and their complexes have been characterized by elemental analyses, IR, UV, and NMR spectra.
机译：新的单和双（冠醚）配体已经通过适当的甲酰基苯并-15-冠-5 [（2）和（4）]与乙醇胺和1,2-转化为[（4-氨基苯氧基）甲基]合成分别是]苯（6）。通过在NaOH存在下1,2-双（溴甲基）苯与对硝基苯酚反应形成二硝基化合物（5）来制备二胺（6），然后使用水合肼将其还原为化合物（6）。钯/碳用高氯酸钠制备了单和双（冠醚）配体的同核钠络合物。已经在各种溶剂中研究了邻羟基冠醚席夫碱（7），（8），（7a）和（8a）的UV-VIS光谱。结果表明，在高于400 nm的值处观察到的条带是配体和配合物的酮胺形式的结果。所有的冠醚配体及其配合物均已通过元素分析，IR，UV和NMR光谱进行了表征。

著录项

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