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Bridging Amines with CO2: Organocatalyzed Reduction of CO2 to Aminals

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journal contribution
posted on 02.07.2015, 00:00 by Xavier Frogneux, Enguerrand Blondiaux, Pierre Thuéry, Thibault Cantat
The four-electron reduction of CO2 in the presence of secondary aromatic amines is described for the first time to access aminals. Under metal-free hydrosilylation conditions, the four C–O bonds of CO2 are cleaved, and the organocatalysts are able to balance the reactivity of CO2 to promote the selective formation of two C–N and two C–H bonds. The methodology enables the formation of various symmetrical and unsymmetrical aminals.