A one-pot reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles from the alcohols via copper oxide nanoparticles (nano CuO) catalyzed nucleophilic substitution of alcohol with azide, followed by azide-alkyne 1,3-dipolar cycloaddition (click reaction) is reported. 1,4-Disubstituted 1,2,3-triazoles are obtained in good to excellent yields from a variety of readily available alcohols without the need for the preactivation and isolation of the azide intermediates.
Regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles via three-component coupling of secondary alcohols, TMSN3 and alkynes
作者:B. Sreedhar、P. Surendra Reddy、V. Rama Krishna
DOI:10.1016/j.tetlet.2007.06.069
日期:2007.8
1.4-Disubstituted 1.2.3-triazoles are obtained in excellent yields via a three-component coupling of secondary alcohols, alkynes and trimethylsilyl azide (TMSN3). This one-pot reaction occurs through in situ generation of an azide from the alcohol and TMSN3, followed by 1,3-dipolar cycloaddition of the terminal alkyne to afford the corresponding disubstituted triazoles. (c) 2007 Elsevier Ltd. All rights reserved.