Process for preparing 2,2-difluoroethylamine by hydrogenating 1,1-difluoro-2-nitroethane
View Patent ↗Process for preparing 2,2-difluoroethylamine, characterized in that 1,1-difluoro-2-nitroethane is subjected to a catalytic hydrogenation.
1. A process for preparing 2,2-difluoroethylamine, which comprises subjecting 1,1-difluoro-2-nitroethane to a catalytic hydrogenation, wherein the catalyst used in the catalytic hydrogenation comprises a metal selected from the group consisting of palladium and platinum under the proviso that Raney nickel is excluded.
2. The process according to claim 1 , wherein the catalytic hydrogenation takes place in the presence of inorganic or organic acid.
3. The process according to claim 1 , wherein the catalyst is PtO 2 , Pd(OH) 2 on activated carbon, or a Lindlar catalyst.
4. The process according to claim 1 , wherein the catalytic hydrogenation involves introducing gaseous hydrogen into the reaction vessel or generating hydrogen in situ.
5. The process according to claim 2 , wherein the catalyst is PtO 2 , Pd(OH) 2 on activated carbon, or a Lindlar catalyst.
6. The process according to claim 2 , wherein the catalytic hydrogenation involves introducing gaseous hydrogen into the reaction vessel or generating hydrogen in situ.