( 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.
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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01649942
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Soumis le : mardi 28 novembre 2017 - 09:03:58
Dernière modification le : vendredi 8 juin 2018 - 14:50:12

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Sreevardhan Reddy Sanapureddy, Laurent Plasseraud. ( 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. Applied Organometallic Chemistry, Wiley-Blackwell, 2017, 31 (11), 〈http://onlinelibrary.wiley.com/doi/10.1002/aoc.3807/abstract;jsessionid=51B48CE612790FD28DFF843DB76FDEF9.f02t03?systemMessage=Wiley+Online+Library+usage+report+download+page+will+be+unavailable+on+Friday+24th+November+2017+at+21%3A00+EST+%2F+02.00+GMT+%2F+10%3A00+SGT+%28Saturday+25th+Nov+for+SGT+〉. 〈10.1002/aoc.3807〉. 〈hal-01649942〉

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