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- W1926291224 abstract "A versatile approach for the production of dispersed thiol-stabilized gold nanoparticles in the pores of siliceous mesocellular foam (MCF) is described. The reported method is based on an electrochemical oxidation of a gold surface generating oxidative AuIII species, which give rise to a surface-confined redox reaction yielding MCF-supported AuI thiolates. By reducing the corresponding AuI-S-MCF species with sodium borohydride, thiol-stabilized gold nanoparticles in the size range of 1–8 nm were obtained as determined by transmission electron microscopy. Elemental analysis indicated an Au loading of 3 % (w/w) on the MCF. The surface-confined Au nanoparticles were used to catalyze the cycloisomerization of alkynoic acids to the corresponding γ-alkylidene lactones in high efficiency and complete 5-exo-dig selectivity under mild reaction conditions." @default.
- W1926291224 created "2016-06-24" @default.
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- W1926291224 date "2015-02-19" @default.
- W1926291224 modified "2023-10-18" @default.
- W1926291224 title "Dispersed Gold Nanoparticles Supported in the Pores of Siliceous Mesocellular Foam: A Catalyst for Cycloisomerization of Alkynoic Acids to γ-Alkylidene Lactones" @default.
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- W1926291224 doi "https://doi.org/10.1002/ejoc.201403664" @default.
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