Cesium carbonate → HCID 44124984, compound

Participants

Reaction Conditions

Reaction Steps

To a 50 mL round-bottomed flask was added N-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazin-2-yl)acetamide (100 mg, 331 μmol), N-(3,6-dichloropyridazin-4-yl)-4-fluorobenzenesulfonamide (107 mg, 331 μmol), cesium carbonate (216 mg, 662 μmol), 662 μmol), dioxane (3 mL), water (0.5 mL). The reaction mixture was stirred at 90° C. for 2 h. The mixture was cooled down to room temperature. The reaction mixture was diluted with satd NH4Cl (2 mL) and extracted with EtOAc (3×20 mL). The combined organic extracts were washed with satd NaCl (2 mL), dried over Na2SO4, filtered and concentrated in vacuo and the residue was purified by silica gel chromatography (15% MeOH/CH2Cl2) to give N-(6-(6-chloro-5-(4-fluorophenylsulfonamido)pyridazin-3-yl)imidazo[1,2-b]pyridazin-2-yl)acetamide (21 mg, 14% yield). MS (ESI positive ion) m/z: 461 (M+1). 1H NMR (300 MHz, DMSO-d6) δ ppm 2.13 (s, 3H) 7.36 (t, J=8.70 Hz, 3H) 7.53 (d, J=8.18 Hz, 1H) 7.82-8.00 (m, J=6.14 Hz, 2H) 8.05 (d, J=9.35 Hz, 1H) 8.29 (s, 1H)

Provenance & Evidence