Catalytic Reactions of Carbene Precursors on Bulk Gold Metal
| Title | Catalytic Reactions of Carbene Precursors on Bulk Gold Metal |
| Publication Type | Journal Article |
| Year of Publication | 2009 |
| Authors | Zhou YB, Trewyn BG, Angelici RJ, Woo LK |
| Journal Title | Journal of the American Chemical Society |
| Volume | 131 |
| Pages | 11734-11743 |
| Date Published | 08/26 |
| ISBN Number | 0002-7863 |
| Accession Number | ISI:000269379400034 |
| Keywords | 3, 3-disubstituted cyclopropenes, aerobic oxidation, alkylidene complexes, asymmetric cyclopropanation, c-h insertion, carbon-monoxide, copolymer films, diazo-compounds, non-nanogold catalysis, secondary-amines |
| Abstract | Bulk gold metal powder, consisting of particles (5-50 mu m) much larger than nanoparticles, catalyzes the coupling of carbenes generated from diazoalkanes (R2C=N-2) and 3,3-diphenylcyclopropene (DPCP) to form olefins. It also catalyzes cyclopropanation reactions of these carbene precursors with styrenes. The catalytic activity of the gold powder depends on the nature of the gold particles, as determined by TEM and SEM studies. The reactions can be understood in terms of mechanisms that involve the generation of carbene R2C: intermediates adsorbed on the gold surface. |
| URL | <Go to ISI>://000269379400034 |
| DOI | 10.1021/Ja900653s |
