Simple and Efficient One‐Pot Synthesis of 2,4‐Diaryl‐1,2,3‐triazoles
作者:Wen‐Jie Tang、Yong‐Zhou Hu
DOI:10.1080/00397910600781216
日期:2006.8.1
Abstract A general and efficient method for the preparation of 2,4‐diaryl‐1,2,3‐triazoles fromα‐hydroxyacetophenones and phenylhydrazines is reported. The essential characteristics of this method include mild reaction conditions, a straightforward workup procedure, and comparatively higher yields.
The reactions of α‐bromoacetophenones with methylhydrazine in refluxing acetic acid generated 2‐methyl‐4‐aryl‐2H‐[1,2,3]triazoles in good yields. The method was developed by the reactions of α‐bromoacetophenones with phenylhydrazines in the presence of cupric ion, leading to 2,4‐diary‐2H‐[1,2,3]triazoles. The structures were established on the basis of corresponding IR, 1H NMR, and elemental analysis data.
A Novel and Efficient Strategy for the Preparation of 2,4-Disubstituted-1,2,3-triazoles
作者:Yun Luo、Yongzhou Hu
DOI:10.1081/scc-120024731
日期:2003.10
Abstract We have developed a novel and efficient method for the preparation of 2,4-disubstituted-1,2,3-triazoles. These compounds 3a–3p were synthesized in good yield by refluxing α-aminoacetophenones and hydrazines in glacial acetic acid. The reaction proceeds under mild conditions and is compatible with various functional groups.