- Bridging amines with CO2: Organocatalyzed reduction of CO2 to aminals
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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.
- Frogneux, Xavier,Blondiaux, Enguerrand,Thuéry, Pierre,Cantat, Thibault
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p. 3983 - 3987
(2015/11/11)
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- Process for preparing N,N,N',N'-tetraphenyldiaminomethane
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N,N,N',N'-tetraphenyldiaminomethane, antioxidant for rubber, is prepared by reaction of 2 molar proportions of diphenylamine and 0.8-1.3 molar proportions of formaldehyde at room temperature. The reaction may be carried out in a storage container, for example a thermoplastic container which, holding the tetraphenyldiamonomethane, can be added to and will blend into a rubber mix.
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