Activation and Conversion of C0$_2$ and S0$_2$ under Metal-Cree Conditions

T. Cantat (1)

1 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)

With 95 % of organic chemical commodities deriving from fossi! resources, the chemical industry is currently exploring novel and renewable carbon feedstocks for the production of both bulk and fine chemicals. In this context, the utilization of C0$_2$ or products derived from biomass wastes is an attractive strategy to access value-added products. Because these carbon sources feature carbon atoms in an oxidized state, the developmenti,of reduction methods is needed and they call for the design of efficient catalysts able to break strong C-O and C=O bonds. Over the last years, our group has developed novel catalytic reactions for the conversion of C0$_2$ to formamides, N-heterocyc\es, methylamines and methanol, using hydroboranes, hydrosilanes or formic acid as reductants. Extension ofthis methodology to S0$_2$ enabled the facile conversion ofthis gaz to sulfones, under metal-free conditions. These new catalytic transformations rely on the use of simple organocatalysts, including nitrogen and phosphorus bases as weil as Frustrated Lewis Pairs. The mechanisms at play in these transformations will be presented, based on DFT calculations and isolation of reactive catalytic intermediates.

Domaines: Matériaux

T. Cantat. Activation and Conversion of C0$_2$ and S0$_2$ under Metal-Cree Conditions. ESOC 2017, Jul 2017, Cologne, Germany. ⟨cea-02341645⟩