反应详情

温度

50 °C

1,1-Dimethylethyl 4-[(4-trifluoromethyl-5-chloro-2-nitrophenyl)amino]-1-piperidinecarboxylate (D61, 6.7 g) was dissolved in ethanol (100 ml) and Raney nickel (50% aqueous suspension, 5 ml) was added at room temperature; the mixture was heated to 50° C. and hydrazine monohydrate (3 ml) was added over 30 min. After 1 h more, the reaction mixture was cooled to room temperature, filtered through Celite, evaporated, re-evaporated from toluene, and the residue crystallised from dichloromethane to yield the subtitle compound, 4.0 g.

1. temperaturethe reaction mixture was cooled to room temperature
2. filtrationfiltered through Celite
3. customevaporated
4. customre-evaporated from toluene
5. customthe residue crystallised from dichloromethane