Villemin, D.Bar, N.Hammadi, M.Hachemi, M.2015-04-212015-04-2120000308-2342https://dspace.univ-boumerdes.dz/jspui/handle/123456789/428Liquid acid such as perchloric acid, chlorosulfonic or triflic acid can effectively replace sulfuric acid as a catalyst in Thiele–Winter reaction of menadione. Solid acids like zeolites and heteropolyacids are described for the first time as catalysts in Thiele–Winter reaction. The two step sequence (Thiele–Winter), saponification–oxidation) constitutes a new synthesis of the antibiotic phthiocol from menadioneenLiquid acidCatalystsMenadioneSolid acidsLiquid and solid acids as catalysts for the Thiele–Winter reaction of menadioneArticle