反应详情

Trifluoroacetic acid (10 mL) was added dropwise to an ice-cooled solution of tert-butyl (1-methyl-6-oxo-1,6-dihydropyridin-3-yl)carbamate (Heterocycles 1995; 40; 2; 831-836) (2.87 g, 12.8 mmol) in dichloromethane (80 mL), and the reaction then stirred at room temperature for 18 hours. The mixture was concentrated in vacuo and the residue purified by column chromatography on silica gel using dichloromethane:methanol:0.88 ammonia (90:10:1) as eluant to afford the title compound as a red/brown solid, 1.90 g.

1. customthe reaction
2. concentrationThe mixture was concentrated in vacuo
3. customthe residue purified by column chromatography on silica gel