Dichloromethane → HCID 118075456, compound

Participants

Reaction Steps

Trifluoroacetic acid (70 mL) was added to a solution of tert-butyl 5-cyclobutoxy-2,3-difluorophenylcarbamate (32 g, 107 mmol) in dichloromethane (320 mL), and the resulting solution stirred overnight at room temperature. The reaction solution was concentrated, and the residue was dissolved in dichloromethane (500 mL). A solution of HCl (4 M in 1,4-dioxane, 120 mL) was slowly added with stirring. The resulting mixture was concentrated and poured into ethyl ether (480 mL). The resulting precipitate was filtered, and the filter cake was dried under reduced pressure to afford 5-cyclobutoxy-2,3-difluoroaniline hydrogen chloride (21 g, 89%) as a light yellow solid. MS (ESI, pos. ion) m/z 200 [M+H]+.

Provenance & Evidence