Yahoo Search Búsqueda en la Web

Resultado de búsqueda

  1. 15 de jul. de 2019 · Gold nanorings are attractive as plasmonic metal nanocrystals because they have a hollow inner cavity. Their enhanced electric field inside the ring cavity is accessible, which is highly desirable for assembling with other optical components and studying their plasmon-coupling behaviors.

  2. 16 de abr. de 2023 · Herein, we report a gold-catalyzed Heck reaction facilitated by the ligand-enabled Au(I)/Au(III) redox catalysis. The elementary organometallic steps such as migratory insertion and β-hydride elimination have been realized in the catalytic fashion for the first time in gold chemistry. The present methodology not only overcomes the limitations of previously known transition metal-catalyzed ...

  3. The first report on gold-catalyzed cross-coupling reactions describes the reaction of aryl halides 3a with electron-rich arenes 3b by utilizing MeDalPhos ligand. 10 As per DFT studies, ...

  4. 24 de may. de 2019 · The red shift of the absorption wavelength originates from the combination of [Au 2 (μ-dppm) 2 ]Cl 2 and ligand (Ph 3 P or mercaptan). On the basis of this finding, a gold-catalyzed reductive desulfurizing C–C coupling of electrophilic radicals and styrenes mediated by blue LEDs is presented, a coupling which cannot be efficiently accessed ...

  5. 15 de ene. de 2010 · 319; see the Perspective by Christensen and Nørskov) created high–surface area gold catalysts by leaching silver from gold-silver alloys. This material proved to be an effective catalyst for partial oxidative coupling of methanol, yielding methyl formate.

  6. 13 de dic. de 2023 · While promoting direct C-C coupling using EAO mediated gold redox chemistry is interesting, arguably, the most unique reactivity of cationic gold catalysis over other metal cations is the ...

  7. 28 de oct. de 2019 · Going for gold: Gold-catalyzed cross-coupling reactions have emerged as an important and active research area in chemistry with many new methodologies and mechanistic studies being reported regularly. A critical discussion of the past studies, current trends, and future directions in the field of gold-catalyzed coupling reactions is presented.