Reference : Simple, cheap but highly efficient organo catalysts for the fixation of CO2 on propar...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/211353
Simple, cheap but highly efficient organo catalysts for the fixation of CO2 on propargylic alcohols
English
Ngassam Tounzoua, Charlene Gabriela [University of Liège (ULg), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM) > > > >]
Gilbert, Bernard mailto [University of Liège (ULg), Department of Chemistry, Laboratory of Raman Spectroscopy > > > > >]
Detrembleur, Christophe mailto [University of Liège (ULg), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM) > > > >]
Jérôme, Christine mailto [University of Liège (ULg), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM) > > > >]
Boyaval, Amélie [University of Liège (ULg), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM) > University of Bordeaux, CNRS, Institute of Molecular Sciences, Talence, France > > >]
Tassaing, Thierry [University of Bordeaux, CNRS, Institute of Molecular Sciences, Talence, France > > > >]
Grignard, Bruno mailto [University of Liège (ULg), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM) > > > >]
4-May-2017
No
No
National
Belgian Polymer Group (BPG) Annual Meeting
04/05/2017 - 05/05/2017
Houffalize
Belgium
[en] supercritical carbon dioxide
[en] In the last years, many efforts have been devoted to the valorisation of CO2 as an abundant and renewable C1 building block for cyclic carbonate synthesis. Many synthetic routes have been proposed to convert CO2 into five or six-membered cyclic carbonates finding applications as green solvent, electrolytes for Li-ion batteries, intermediates for organic synthesis, monomers for the production of polycarbonates or isocyanate-free synthesis of poly(hydroxyrethane)s, etc. Although the 100% atom economy synthesis of 5-membered cyclic carbonates from CO2 and epoxides/oxetanes has been widely reported in the literature, the carboxylative coupling of CO2 with alkynols remains unexplored. Transition metal-based complexes, organic bases (guanidine, amidine, phosphine), N-heterocyclic carbenes or olefins, and K2CO3 have been proposed as catalysts. However they generally present sufficient activity at high pressure and/or temperature or require a high catalyst loading. Additionally some of them are toxic and/or sensitive to hydrolysis or oxidation.
In this work, we designed novel, cheap, easily customizable and highly efficient organocatalysts for the synthesis of cyclic α-methylene carbonates from CO2 and alkynols. Kinetics of the CO2/alkynol coupling reaction were followed by Raman spectroscopy with organocatalysts of different structures, and the best candidate was identified. The main parameters that influenced the system reactivity and selectivity have been identified and will be presented in this poster.
Center for Education and Research on Macromolecules (CERM) ; CESAM Complex and Entangled Systems from Atoms to Materials (CESAM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/211353
This poster was presented by Charlène Ngassam

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