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Ligand-promoted reaction on silver nanoparticles: phosphine-promoted, silver nanoparticle-catalyzed cyclization of 2-(1-hydroxy-3-arylprop-2-ynyl)phenols |
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| Authors: | Min Yu Chengyan Han Chao-Jun Li Xiaoquan Yao |
| Affiliation: | a Department of Applied Chemistry, School of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China b School of Pharmacy, Nanjing Medical University, Nanjing 210029, PR China c Department of Chemistry, McGill University, Montreal, QC, Canada, H3A 2K6 |
| Abstract: | A highly efficient annulation of 2-(1-hydroxy-3-arylprop-2-ynyl)phenols leading to the key intermediates to synthesize aurones was catalyzed by silver nanoparticles/carbon black-supported silver nanoparticles. In the presence of phosphine ligand, both the catalysts show excellent catalytic activities in the reaction and give the products with good yields as well as excellent regio- and stereo-selectivities in a water-toluene mixed solvent. Furthermore, the catalysts can be recovered and recycled effectively several times. |
| Keywords: | Silver nanoparticle Catalytic annulation Phosphine ligand Aurone |
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