Gold nanoparticles supported on TiO2catalyse the cycloisomerisation/oxidative dimerisation of aryl propargyl ethers

• DOI: 10.1039/c0cc03353g
• Publication Date: 2010-11-11T09:30:21Z
• Authors: Christina Efe; Ioannis N. Lykakis; Manolis Stratakis
• Keywords: Propargyl

Gold nanoparticles supported on TiO(2) (~1%) catalyse in high yields the selective cycloisomerisation of aryl propargyl ethers into corresponding 2H-chromenes, under heterogeneous conditions. 2H,2'H-3,3'-Bichromenes resulting from a catalytic oxidative dimerization pathway are also formed as by-products.