1Department of Chemistry, School of Science, Alzahra University, Tehran, I.R. IRAN
2Department of Chemistry, Islamic Azad University, Mashhad Branch, Mashhad, I.R. IRAN
The catalytic air oxidation-trimerization of alcohols was carried out with hetropolyacids. In the presence of hetropolyacid formation of cyclotrimers of alcohols and aldol condensation products was observed. The 1,3,5-trioxanes were major and aldol condensation compounds were minor products.