Potassium Carbonate → HCID 86594061, compound

Participants

Reaction Conditions

Reaction Steps

A stirred solution of 2,6-difluorobenzaldehyde 5 (10.0 g, 70 mmol) in N,N-dimethylformamide is treated with tert-butyl piperazine-1-carboxylate (14.4 g, 77.0 mmol) and potassium carbonate (11.7 g, 85.0 mmol), stirred at 80° C. for 16 h, cooled to ambient temperature, diluted with water and extracted with methylene chloride. The extracts are combined, washed sequentially with water and brine, dried over sodium sulfate, and concentrated in vacuo to afford a crude oil. This oil is purified by column chromatography (silica gel, 15:85 ethyl acetate/hexanes) to afford the title compound as a yellow solid, 15.5 g (71% yield), identified by NMR and mass spectral analyses.

Provenance & Evidence