Acetyl chloride → (S)-1-(6-bromo-5-cyclobutoxy-7,8-difluoro-2-methyl-3,4-dihydroquinolin-1(2H)-yl)ethanone

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Reaction Steps

Acetyl chloride (0.21 mL, 3.02 mmol) was added dropwise to a 0° C. solution of (S)-6-bromo-5-cyclobutoxy-7,8-difluoro-2-methyl-1,2,3,4-tetrahydroquinoline (1.0 g, 3.02 mmol) in dichloromethane (20 mL) and pyridine (0.6 mL), and the resulting solution was allowed to stir and warm to room temperature overnight. The reaction mixture was diluted with dichloromethane (40 mL), washed with 1 N hydrochloric acid (40 mL) and brine (40 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to afford (S)-1-(6-bromo-5-cyclobutoxy-7,8-difluoro-2-methyl-3,4-dihydroquinolin-1(2H)-yl)ethanone (1.19 g, 99%) as yellow oil. MS (ESI, pos. ion) m/z 374, 376 [M+H]+.

Provenance & Evidence