Triethylamine → Butyl 2-chloropyridin-4-yl(3-nitrophenyl)carbamate

Participants

Reaction Conditions

Reaction Steps

To a stirring solution of 2-Chloro-N-(3-nitrophenyl)pyridine-4-amine (2.70 g, 10.82 mmol) in THF (45 mL) was added Et3N (6.32 mL, 45.3 mmol). The mixture was cooled to 0° C., and DMAP (0.0135 g, 0.110 mmol) and BOC2O (2.84 g, 12.99 mmol) were added. The mixture was warmed to rt and stirred for 18 h. The mixture was quenched with ice and diluted with water. Extracted with EtOAc (3×200 mL), washed with brine and water, dried (MgSO4), and concentrated. A dark oil was afforded, which was passed through a pad of silica gel, eluting with 1:1 EtOAc/hexanes. Concentrated and dried under high vacuum to afford ten-Butyl 2-chloropyridin-4-yl(3-nitrophenyl)carbamate (3.65 g, 96.5% yield).

Provenance & Evidence