Pyridine → HCID 67243569, compound

Participants

Reaction Steps

A solution of 3-(4-amino-2,6-dichlorophenoxy)-quinoline-6-carboxylic acid methyl ester (96) (0.93 mmol) and 2,4-dichlorobenzenesulfonyl chloride (250 mg, 1.02 mmol) in pyridine (0.13 mL, 1.53 mmol) CH2Cl2 (3.7 mL) was stirred at room temperature for 12 h. Sat NaHCO3 was added to the reaction mixture, which was then extracted twice with AcOEt. Organic layer was washed by brine, dried over anhydrous MgSO4, and concentrated. Crude residue was purified by column chromatography (hexane/AcOEt=2/1, 80 g of silica gel) to afford compound 45 (237 mg, 41%, in 3 steps). 1H NMR (300 MHz, DMSO-d6) δ 3.90 (3H, s), 7.31 (2H, s), 7.72 (1H, dd, J=1.8, 7.8 Hz), 7.79 (1H, d, J=3.0 Hz), 7.96 (1H, d, J=1.8 Hz), 8.11 (2H, s), 8.18 (1H, d, J=7.8 Hz), 8.64 (1H, s), 8.99 (1H, d, J=3.0 Hz), 11.42 (1H, br s). MS (M+H) 571.

Provenance & Evidence