Copper-catalyzed Huisgen 1,3-dipolar cycloaddition under oxidative conditions: polymer-assisted assembly of 4-acyl-1-substituted-1,2,3-triazoles.
J Org Chem
; 78(13): 6540-9, 2013 Jul 05.
Article
em En
| MEDLINE
| ID: mdl-23738944
ABSTRACT
We herein document the first example of a reliable copper-catalyzed Huisgen 1,3-dipolar cycloaddition under oxidative conditions. The combined use of two polymer-supported reagents (polystyrene-1,5,7-triazabicyclo[4,4,0]dec-5-ene/Cu and polystyrene-2-iodoxybenzamide) overcomes the thermodynamic instability of copper(I) species toward oxidation, enabling the reliable Cu-catalyzed Huisgen 1,3-dipolar cycloadditions in the presence of an oxidant agent. This polymer-assisted pathway, not feasible under conventional homogeneous conditions, provides a direct assembly of 4-acyl-1-substituted-1,2,3-triazoles, contributing to expand the reliability and scope of Cu(I)-catalyzed alkyne-azide cycloaddition.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Poliestirenos
/
Azidas
/
Triazóis
/
Cobre
/
Alcinos
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article