| Titre : | Hydrogen-transfer reduction of ketones into corresponding alcohols using formic acid as a hydrogen donor without a metal catalyst in high-temperature water (2010) |
| Auteurs : | Zheng Shen, Auteur ; Yalei Zhang, Auteur ; Fangming Jin, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 13, Juillet 2010) |
| Article en page(s) : | pp. 6255–6259 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Hydrothermal reactions Hydrogen transferring Ketones |
| Résumé : | In hydrothermal reactions at 260−300 °C, ketones can be reduced into corresponding alcohols by hydrogen transferring from another alcohols or formic acid without a metal catalyst. When using formic acid as a hydrogen donor, the yield of alcohols at respective better conditions was considerably high at a much lower ratio of hydrogen source to ketones compared to traditional Meerwein−Poundrof−Verley (MPV) reduction, reaching 60% for isopropanol from acetone and 70% for lactic acid from pyruvic acid. The proposed possible mechanism for the hydrogen transfer reduction of ketones in high-temperature water (HTW) is similar to the pathway elucidated in the traditional MPV reduction via a transition state. Rather than metal-alkoxides catalysts in MPV reduction, water molecules in HTW as a catalyst may directly participate in the transition state by making a hydrogen-bond ring network with three molecules, that is, ketone, formic acid, and water. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie100598a |
