Phosphazenes : efficient organocatalysts for the catalytic hydrosilylation of carbon dioxide

Authors: Courtemanche, Marc-AndréLégaré, Marc-AndréRochette, ÉtienneFontaine, Frédéric-Georges
Abstract: Phosphazene superbases are efficient organocatalysts for the metal-free catalytic hydrosilylation of carbon dioxide. They react with CO2 to form the respective phosphine oxides, but in the presence of hydrosilanes, CO2 can be selectively reduced to silyl formates, which can in turn be reduced to methoxysilanes by addition of an extra loading of silanes. Activities reach a TOF of 32 h−1 with a TON of 759. It is also shown that unexpectedly, N,N-dimethylformamide can reduce CO2 to a mixture of silyl formates, acetals and methoxides in the absence of any catalyst.
Document Type: Article de recherche
Issue Date: 13 March 2015
Open Access Date: 18 June 2018
Document version: AM
This document was published in: Chemical Communications, Vol. 51 (31), 6858–6861 (2015)
Chemical Society
Alternative version: 10.1039/c5cc01282a
Collection:Articles publiés dans des revues avec comité de lecture

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