Water → 2-Bromo-4-oxo-4,5-dihydrothieno[3,2-c]quinoline-7-carbonitrile

Participants

Reaction Conditions

Reaction Steps

4-oxo-4,5-dihydrothieno[3,2-c]quinoline-7-carbonitrile (1.0 eq, 350 mg, 1.55 mmol) was mixed with N-bromosuccinimide (1.1 eq, 303 mg, 1.70 mmol) in acetic acid (4 ml). The mixture was stirred at 100° C. for 4 hours. The mixture was cooled down to 80° C., more NBS (303 mg) was added and the mixture stirred overnight. Water was added and the material filtered and dried. Trituration in methanol and filtration afforded 2-bromo-4-oxo-4,5-dihydrothieno[3,2-c]quinoline-7-carbonitrile as a grey solid (396 mg, 84% yield). LCMS (ES)>80% pure, m/z 305 [M]+, 307 [M+2]+.

Provenance & Evidence