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| Titre: | Tungstosilicic acid (H4SiW12O40) have efficient catalysts for synthesis of 2,3-Dihydroxynaphthoquinone from lawsone |
| Auteur(s): | Benferrah, Nassima
Hammadi, Mohamed
Dokari, Hadjila
Villemin, Didier |
| Mots-clés: | Heteropolyacids
Without solvent
Room temperature
Lawsone
Catalytic system (Pc[Co]/K10) |
| Date de publication: | 2016 |
| Collection/Numéro: | Der Pharma Chemica/ Vol.8, N°21(2016);pp. 6-9 |
| Résumé: | The Thiele–Winter reaction is of interest for synthesis of tetracetoxyaromatic precursors of hydroxynaphtoquinones. Solid acids such as
Tungstosilicic acid (H4
SiW12O40) have an efficient catalyst in acetoxylation reaction of naphtoquinones without the use of organic solvent
at room temperature. 1,2,3,4-Tetrahydroxynaphthalene was easily oxidized at room temperature in 2,3-Dihydroxynaphthoquinone
by using (Pc[Co]/K10) and air (1 atm). We have also tested this type of reaction in 2-hydroxynaphthoquinone (Lawsone). Many
naphthoquinones are natural products with interesting biological properties |
| URI/URL: | http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/4868 |
| ISSN: | 0975-413X |
| Collection(s) : | Publications Internationales
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