Chinese Journal of Organic Chemistry ›› 2004, Vol. 24 ›› Issue (10): 1228-1232. Previous Articles     Next Articles

1,3-偶极环加成反应合成1-(取代苄基)-1,2,3-三唑类化合物

扈艳红*,a, 刘世领b, 仝钦宇a, 黄发荣a, 沈永嘉b, 齐会民a, 杜磊a   

  1. a华东理工大学材料科学与工程学院 上海 200237;
    b华东理工大学精细化工研究所 上海 200237
  • 收稿日期:2003-10-21 修回日期:2003-02-23 接受日期:2004-04-19 发布日期:2022-09-20
  • 基金资助:
    国家安全重大基础研究973 (No. 5131101)、国家高技术研究发展计划863 (No. 2002AA35103)和武器装备预研基金(No. 51412020103QT311)资助项目.

Synthesis of 1-(Substituted benzyl)-1,2,3-triazoles by 1,3-Dipolar Cycloaddition Reaction

HU Yan-Hong*,a, LIU Shi-Lingb, TONG Qin-Yua, HUANG Fa-Ronga, SHEN Yong-Jiab, QI Hui-Mina, DU Leia   

  1. aSchool of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237;
    bInstitute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237
  • Received:2003-10-21 Revised:2003-02-23 Accepted:2004-04-19 Published:2022-09-20
  • Contact: * E-mail: fhuanglab@ecust.edu.cn; Fax: 021-64253031.

Benzyl azide, 4-methyl-benzyl azide, 4-cyano-benzyl azide, 4-fluoro-benzyl azide and 1,1'-bi-azidomethyl-4,4'-biphenyl were prepared by the nucleophilic substitution reaction of NaN3 with substituted benzyl chlorides. The reaction rate was affected by the substitution groups at the phenyl ring, and electron-withdrawing groups could accelerate the rate. And 1,3-dipolar cycloaddition reaction of the azides with phenylacetylene wasstudied. The corresponding compounds (azides and 1,2,3-triazoles) were characterized with NMR, FT-IR and elementary analysis. The 1,2,3-triazoles were thermal stable. The addition rate depended onthe substitution groups of the azides (1,3-dipole), and the reactivities correlated with polar effects: phenyacetylene (dipolarophile) reacted faster with electron-poor azides and vice versa. The 1,3-dipolar cycloaddition reaction wasfound to be regioselective, and the 4-phenyl-1,2,3-triazoles were the major products in the two structural isomers of 1,2,3-triazoles obtained.

Key words: azide, phenylacetylene, 1,2,3-triazole, 1,3-dipolar cycloaddition reaction