Synthesis 2018; 50(14): 2768-2774
DOI: 10.1055/s-0037-1609720
paper
© Georg Thieme Verlag Stuttgart · New York

A Mild Multi-Component Reaction for the Synthesis of 4,5-Disubstituted 1H-1,2,3-Triazoles from Phosphonium Salts, Aldehydes, and Sodium Azide

Guang-Long Wu
School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China   Email: qpwu@bit.edu.cn
,
Qin-Pei Wu*
School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China   Email: qpwu@bit.edu.cn
› Author Affiliations
This work was financially supported by the National Science Foundation of China (Grant No. 21172019).

Further Information

Publication History

Received: 25 January 2018

Accepted after revision: 27 March 2018

Publication Date:
08 May 2018 (online)


Abstract

A mild and metal-free multi-component reaction to synthesize 4,5-disubstituted 1H-1,2,3-triazoles from phosphonium salts, aldehydes, and sodium azide is described. The process undergoes an organocatalyzed coupling of formyl group with phosphonium to form a key intermediate, olefinic phosphonium salt, which is followed by the [3+2] cycloaddition of the azide to the activated alkene. A series of representative 4,5-disubstituted 1H-1,2,3-triazoles were prepared.

Supporting Information