| Título: | Unsupported copper nanoparticles in the 1,3-dipolar cycloaddition of terminal alkynes and azides |
| Autores: |
Alonso Valdés, Francisco Moglie, Yanina Radivoy, Gabriel Yus Astiz, Miguel |
| Fecha: |
2010-04-19 2010-04-19 2010 2010-02-24 |
| Publicador: | RUA Docencia |
| Fuente: |
 |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Click chemistry Cycloaddition Alkynes Azides Copper Nanoparticles Química Orgánica |
| Descripción: |
Readily prepared copper nanoparticles were found to catalyse the 1,3-dipolar cycloaddition of azides and alkynes up to rates comparable to those of microwave chemistry. Both the preparation of the nanoparticles and the click reaction are carried out under mild conditions, in short reaction times and in the absence of any stabilising additive or ligand. A variety of 1,2,3-triazoles were prepared in excellent yields. A reaction mechanism was postulated on the basis of different reactivity studies and deuteration experiments. Copper(I) acetylides were demonstrated to be the real intermediate species. Spanish Ministerio de Educación y Ciencia (MEC) (grant no. CTQ2007-65218 and Consolider Ingenio 2010-CSD2007-00006), the Generalitat Valenciana (grant no. PROMETEO/2009/039) and the Secretaría General de Ciencia y Tecnología (SeCyT), Universidad Nacional del Sur (PGI 24/Q014). |
| Idioma: | Inglés |
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