Chlorosuccinimide → 6-Bromo-8-chloro-3,4-dihydroquinolin-2(1H)-one

참여 물질

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To a stirred solution of 6-bromo-7-fluoro-3,4-dihydroquinolin-2(1H)-one (122-3; 3 g, 0.0012 mol) in N,N-dimethylformamide (30 mL) was added N-chlorosuccinimide in N,N-dimethylformamide (3 mL) (1.4 g, 0.0105 mol) at 70° C. drop wise over a period of 2 h. Reaction mass was allowed to stir at 70° C. for 14 h. The reaction mixture was cooled and diluted with ice cold water. The precipitated solid was filtered and dried to obtain title compound. MS (M−1): 278.12.

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