Synthesis 2022; 54(09): 2175-2184
DOI: 10.1055/s-0041-1737336
paper

The Use of Propargylamines to Synthesize Amino-1,2,3-triazoles via Cycloaddition of Azides with Allenamines

Authors

  • Shanguang Qiu

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Wenhao Chen

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Dongying Li

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Yuxue Chen

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Yanning Niu

    b   Department of Teaching and Research, Nanjing Forestry University, Huaian, 223003, P. R. of China
  • Yi Wu

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Yang Lei

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Luyong Wu

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China
  • Wenying He

    a   Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, 571158, P. R. of China

This work was supported by the Natural Science Foundation of Hainan Province, China (219MS044) and the National Natural Science Foundation of China (NSFC-21562019).


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Abstract

A novel reaction of propargylamines with aryl azides is designed for the synthesis of 5-amino-1,2,3-triazoles employing a one-pot strategy. In this process, base-mediated isomerization of propargylamines generates allenamine intermediates, which participate in a cyclization reaction with azides. Optimization of the reaction conditions revealed that t-BuOK as the base and DMF as the solvent gave the best yields. This protocol is expanded to different propargylamines and azides, with the results showing that 3-aryl propargylamines and aryl azides are tolerated to produce the corresponding 1,2,3-triazoles. This procedure provides a simple and efficient method to access a series of 5-amino-1,2,3-triazoles possessing a wide spectrum of functional groups.

Supporting Information



Publikationsverlauf

Eingereicht: 31. Oktober 2021

Angenommen nach Revision: 09. Dezember 2021

Artikel online veröffentlicht:
01. Februar 2022

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