Gold nanoparticles supported on TiO2 catalyse the cycloisomerisation/oxidative dimerisation of aryl propargyl ethers.
Gold nanoparticles supported on TiO(2) (~1%) catalyse in high yields the selective cycloisomerisation of aryl propargyl ethers into the 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.
Department of Chemistry, University of Crete, Voutes, 71003 Iraklion, Greece.
Christina
C
Efe
Ioannis N
IN
Lykakis
Manolis
M
Stratakis