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Titre: | Liquid and solid acids as catalysts for the Thiele–Winter reaction of menadione |
Auteur(s): | Villemin, D. Bar, N. Hammadi, M. Hachemi, M. |
Mots-clés: | Liquid acid Catalysts Menadione Solid acids |
Date de publication: | 2000 |
Collection/Numéro: | Journal research (S)/ Journal research (S), (2000);pp. 356-358 |
Résumé: | Liquid 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 menadione |
URI/URL: | http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/428 |
ISSN: | 0308-2342 |
Collection(s) : | Publications Internationales
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