Gold Catalysis

Wednesday, 01 February 2012


Ioannis N. Lykakis, Androniki Psyllaki and Manolis Stratakis*

J. Am. Chem. Soc. 2011, 133, 10426-10429.

Oxidative cycloaddition of 1,1,3,3-tetramethyldisiloxane to alkynes catalyzed by supported gold nanoparticles

Gold nanoparticles supported on TiO2 (0.1-1% mol) catalyze at room temperature and at extremely mild conditions the unprecedented oxidative cycloaddition of 1,1,3,3-tetramethyldisiloxane to alkynes forming substituted 2,5-dihydro-1,2,5-oxadisiloles, with concomitant evolution of hydrogen gas. For the majority of the substrates the yields are exceptional (up to 99%). The reaction proceeds at room temperature, tolerates a variety of functional groups, and can be performed in several solve


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