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Article dans une revue
( n -Bu 2 Sn) 2 O(CO 3 ): An active, robust and recyclable organotin(IV) for the direct synthesis of linear organic carbonates from carbon dioxide and alcohols
Abstract : Organotin(IV) compounds are known to promote the direct synthesis of organic carbonates from carbon dioxide and alcohols. In the past, structural studies have highlighted that the carbonato moiety is a recurring ligand of tin species collected during CO2 pressurized reactions. In a mimetic approach and in order to achieve an available and recyclable precursor, the title compound (n-Bu2Sn)2O(CO3) (1) was prepared in a single step by reacting commercial di-n-butyltin dichloride with an aqueous solution of sodium carbonate. Compound 1 was characterized using infrared spectroscopy and thermogravimetric and elemental analyses. Multinuclear NMR investigations in solution were also conducted. Compound 1 was then evaluated for the direct carbonation of alcohols (methanol, ethanol, n-butanol and isopropanol) under CO2 pressure. Recycling experiments were performed showing the efficient reuse of 1 without loss of activity. Furthermore, the infrared fingerprint of 1 was preserved even after several runs demonstrating a good stability. The effects of pressure and of reaction time on dimethyl carbonate formation were also studied.
https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01649942
Contributeur : Icmub - Université de Bourgogne Connectez-vous pour contacter le contributeur
Soumis le : mardi 28 novembre 2017 - 09:03:58
Dernière modification le : vendredi 7 janvier 2022 - 03:54:19
Contributeur : Icmub - Université de Bourgogne Connectez-vous pour contacter le contributeur
Soumis le : mardi 28 novembre 2017 - 09:03:58
Dernière modification le : vendredi 7 janvier 2022 - 03:54:19