有机化学 ›› 2015, Vol. 35 ›› Issue (3): 724-730.DOI: 10.6023/cjoc201409032 上一篇    下一篇

研究论文

四炔的芳炔环加成反应简便合成芳胺

吴玉芹a, 于凉云a, 张奇a, 李立冬a,b   

  1. a 盐城工学院化学与生物工程学院 盐城 224051;
    b 安徽师范大学化学与材料科学学院 芜湖 241000
  • 收稿日期:2014-09-20 修回日期:2014-10-15 出版日期:2015-03-25 发布日期:2014-11-07
  • 通讯作者: 李立冬 E-mail:ld-l@163.com
  • 基金资助:

    国家自然科学基金(No. 21272005)资助项目.

Simple Synthesis of Arylamines from Tetraynes via the Hexadehydro-Diels-Alder Reaction

Wu Yuqina, Yu Liangyuna, Zhang Qia, Li Lidonga,b   

  1. a School of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224051;
    b College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000
  • Received:2014-09-20 Revised:2014-10-15 Online:2015-03-25 Published:2014-11-07
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21272005).

芳胺作为一种合成砌块广泛存在于天然产物、医药品及分子材料中. 诸如一些亲核芳香取代、亲电硝化还原、及过渡金属促进的氨基化合物芳基化作用等作为合成策略在Caryl—N键形成领域被长期应用. 本工作在无金属催化条件下通过四炔的芳炔环加成(Hexadehydro-Diels-Alder, HDDA)反应高效合成了芳胺化合物. 该反应特征表现在无金属催化、无添加剂、无氧化剂、无导向基团前体, 反应在温和条件下高产率地得到炔官能化二环化合物并表现了优越的区域选择性. 所合成产物的结构经各种波谱手段表征确证, 其中化合物3h的结构还通过X 射线单晶衍射分析确认.

关键词: 芳胺, 合成, Caryl—N偶联, HDDA反应

Arylamines are widespread in natural products, pharmaceuticals and molecular materials, and are useful synthetic building blocks. From a synthetic standpoint, the formation of Caryl—N bonds has been achieved by classical methods such as nucleophilic aromatic substitution, electrophilic nitration/reduction, or the transition-metal-mediated arylation of amides. This paper describes an efficient method for the synthesis of arylamines by the hexadehydro-Diels-Alder (HDDA) reaction of tetraynes under catalyst-free condition. This process is achieved in the absence of metal catalyst, base or oxidant, and it does not require the pre-installation of directing groups. This reaction exhibited an excellent regioselectivity, producing highly substituted fused yne-functionalized bicyclic compounds under mild conditions with good to excellent yields. All new products were fully characterized by various spectroscopic techniques and high-resolution mass spectrometry. The molecular structure of 3h was confirmed using single-crystal X-ray analyses.

Key words: arylamines, synthesis, Caryl—N coupling, HDDA reaction