Pyridine → 4-(4-Chloro-phenoxy)-N-(2,5-dibromo-pyridin-3-yl)-benzenesulfonamide

Participants

Reaction Steps

To a solution of 2,5-dibromo-3-aminopyridine (0.51 g, 2.0 mmol) and 4-(4-chloro-phenoxy)-benzenesulfonyl chloride (0.76 g, 2.0 mmol) in dry CH2Cl2 (10 mL) was added pyridine (1 mL) at 0 C. The resulting mixture was allowed to warm to room temperature and stirred until TCL showed the completion of the reaction. The reaction mixture was diluted with CH2Cl2 and washed with aqueous HCl solution. After the pyridine was neutralized, the organics were washed with water, brine and dried over anhydrous Na2SO4. The filtration (Celite) and concentration under vacuo gave a crude material, which was purified by silica column (30% EtOAc/hexanes). MS: 516, 518 (M+H)+.

Provenance & Evidence