Catal Lett (2017) 147:2260–2268 DOI 10.1007/s10562-017-2123-4 Efficient Synthesis of Organic Carbonates to the Multigram Level from CO Using a New Chitin-Supported Catalyst 1 1 1 Heriberto Díaz Velázquez · Javier Guzmán Pantoja · Edith Meneses Ruiz · 1 1 Roberto García de León · Rafael Martínez Palou Received: 27 March 2017 / Accepted: 19 June 2017 / Published online: 6 July 2017 © Springer Science+Business Media, LLC 2017 Abstract A new a chitin-supported KI catalyst system Epoxide has shown highly efficient activity towards the cycloaddi- tion of CO to epoxides. The cooperative effect of this cata- Solvent-free lyst system is enhanced when a little amount of DBU as additive is added at a KI:DBU weight ratio of 8:2, which Chitin enables scaling-up procedures to a multigram level, using a widely available biopolymer such as chitin. Furthermore, the same catalyst composition is able to activate the trans- Carbon esterification of propylene carbonate to dimethyl carbonate O O Dioxide OO under smooth reaction conditions using a KI:DBU weight ratio 1:1. R R Graphical Abstract A combination of DBU with a chi- Cyclic and Acyclic carbonates tin-supported KI catalyst system has shown highly efficient activity towards the cycloaddition of co to epoxides. the synergetic effect in this three-component catalyst system is enhanced at a KI:DBU weight
Catalysis Letters – Springer Journals
Published: Jul 6, 2017
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