Sodium Bicarbonate → HCID 57942210, compound

Participants

Reaction Steps

A mixture of 4-chloro-N-{2-[2-(dimethylamino-methyleneamino)-pyridine-4-carbonyl]-5-methyl-pyridin-3-yl}-N-methoxymethyl-3-trifluoromethyl-benzene sulfonamide (23 mg, mmol) in 5% H2SO4 in TFA (4 mL) and water (1 mL) was stirred at 50° C. for 2 days. The reaction mixture was cooled to room temperature, diluted with water (5 mL) and treated with saturated aqueous NaHCO3 solution slowly till pH 7-8. The mixture was extracted with EtOAc (2×25 mL), dried (anhydrous Na2SO4) and concentrated. The obtained residue was column purified (SiO2, 10% MeOH—CH2Cl2) to afford N-[2-(2-amino-pyridine-4-carbonyl)-5-methyl-pyridin-3-yl]-4-chloro-3-trifluoro methyl-benzenesulfonamide (12 mg) in 63% yield. 1H NMR (400 MHz, CDCl3) δ 10.75 (s, 1H), 8.24 (s, 1H), 8.18 (m, 1H), 8.07 (dd, 1H), 7.95 (d, 1H), 7.75 (d, 1H), 7.63 (d, 1H), 7.15 (s, 1H), 6.95 (d, 1H), 2.25 (s, 3H); ESMS m/z (relative intensity): 471.0 (M+H)+ (100).

Provenance & Evidence