8-Methylquinoline → 5-Bromo-8-methylquinoline

참여 물질

반응 조건

반응 단계

NBS (13.7 g, 76.9 mmol, 1.1 equiv) was added portionwise to a cold (5° C.) solution of 8-methyl-quinoline (10 g, 69.9 mmol) in concentrated H2SO4 (150 mL). The reaction mixture was stirred for 18 h at 5° C., diluted in ice (300 mL) and basified by addition of an aqueous solution of NaOH (10% wt). The resulting white solid was collected by vacuum filtration, rinsed with water, and dissolved in DCM. The organic phase was washed with H2O and brine, dried (Na2SO4), filtered and concentrated to afford 15.2 g of the title compound as a beige solid: ESI-MS: 221.9/223.9 [M+H]+; tR=3.59 min (System 1).

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