Potassium Carbonate → HCID 68610220, compound

Participants

Reaction Steps

tert-Butyl 4-(methylsulfonyloxy)piperidine-1-carboxylate (30.6 mmol, 8.56 g), potassium carbonate (61.3 mmol, 8.47 g) and 5-nitro-1H-indazole (30.6 mmol, 5 g) were combined and heated to 100° C. in N,N-dimethylformamide (30 mL) for 3 hours. The reaction mixture was diluted with ethyl acetate and washed with water. The organic phase was dried over sodium sulfate and concentrated at reduced pressure. The resulting residue was purified by silica chromatography (eluting with a solvent gradient from dichloromethane to 30% ethyl acetate/heptane to 50% ethyl acetate/heptane) to afford the title compound (2.35 g). MS (ESI) m/z 291.0 [M+H]+

Provenance & Evidence