首页> 外文学位 >A study of palladium-catalyzed amination of benzylic carbonates via eta3-benzyl metal complexes, utilizing N-heterocyclic carbene ligands and microwave acceleration.
【24h】

A study of palladium-catalyzed amination of benzylic carbonates via eta3-benzyl metal complexes, utilizing N-heterocyclic carbene ligands and microwave acceleration.

机译:利用N-杂环卡宾配体和微波加速作用,通过eta3-苄基金属配合物对钯催化的碳酸苄酯胺化的研究。

获取原文
获取原文并翻译 | 示例

摘要

While palladium eta3-benzyl complexes have been reported as intermediates in reactions, they are not as well known or well studied as palladium eta3-ally1 complexes. A study of the palladium-catalyzed amination of benzyl carbonates via eta3-benzyl complexes has been carried out, utilizing biphosphine and N-heterocyclic carbene (NHC) ligands with microwave heating. These new conditions significantly enhance the practicality of this reaction. A carbene catalyzed decarbonylation was noted as a significant side-reaction and conditions have been found to reduce this, with size of the NHC ligand being found to be a significant factor in determining product distributions. A variety of methods to generate the active catalyst have been investigated and by altering the NHC by producing a silver complex of itself proved to be the optimum process. Reaction times have varied by the different methods, but a trend showing a decrease in both reaction time and temperature occurs when administering the silver complexes.
机译:尽管已报道钯eta3-苄基络合物作为反应的中间体,但它们不如钯eta3-ally1络合物为人所知或充分研究。利用双膦和N-杂环卡宾(NHC)配体在微波加热下,已通过eta3-苄基络合物进行了钯催化碳酸苄酯胺化的研究。这些新条件大大提高了该反应的实用性。卡宾催化的脱羰作用被认为是显着的副反应,并且发现条件可以减少这种副反应,而NHC配体的大小是决定产品分布的重要因素。已经研究了多种产生活性催化剂的方法,并且通过产生自身的银络合物来改变NHC被证明是最佳方法。反应时间通过不同的方法而变化,但是在施用银络合物时出现显示反应时间和温度均降低的趋势。

著录项

  • 作者

    Mina, Elaine J.;

  • 作者单位

    California State University, Fullerton.;

  • 授予单位 California State University, Fullerton.;
  • 学科 Chemistry Organic.
  • 学位 M.S.
  • 年度 2009
  • 页码 113 p.
  • 总页数 113
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 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