Kinetic Resolution of Cyclic Secondary Azides, Using an Enantioselective Copper-Catalyzed Azide–Alkyne Cycloaddition
作者:Juliana R. Alexander、Amy A. Ott、En-Chih Liu、Joseph J. Topczewski
DOI:10.1021/acs.orglett.9b01556
日期:2019.6.7
An enantioselectivecopper-catalyzedazide–alkynecycloaddition (E-CuAAC) is reported by kinetic resolution. Chiral triazoles were isolated in high yield with limiting alkyne (up to 97:3 enantiomeric ratio (er)). A range of substrates were tolerated (>30 examples), and the reaction was scaled to >1 g. The er of a triazole product could be enhanced by recrystallization and the recovered scalemic azide
CuFe2O4 Nanoparticles Mediated Synthesis of 1,4-Disubstituted 1,2,3-Triazoles
作者:Chunduru Srinivasa Rao、Shakil S. Sait、Jyotsna Cherukuri、B. Ramadevi、Ch. Venkata Ramana Reddy
DOI:10.14233/ajchem.2016.19253
日期:——
A one-pot synthesis of 1,4-disubstituted 1,2,3-triazoles via three component coupling of secondary alcohol, trimethylsilylazide and terminal alkynes in the presence of a catalytic amount of CuFe2O4 nanoparticles is reported.
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.