反应详情

Following the general procedure of Example 2, Step 3, and making noncritical variations, 6-chloro-2-(chloromethyl)imidazo[1,2-a]pyridine (Example 4, Step 1; 0.500 g), 4-(piperazin-1-yl)benzenesulfonamide (Example 2, Step 2; 0.630 g), triethylamine (0.477 g), and ethylene glycol (6 mL) give 0.40 g of the title compound after chromatography on silica gel using methanol/dichloromethane (8/92) and crystallization from methanol/dichloromethane; mp 255-256° C.; IR (mineral oil) 1153, 1327, 1322, 3306, 1106 cm-1. 1H NMR (DMSOd6) δ2.60, 3.29, 3.66, 7.01, 7.06, 7.25, 7.54, 7.60, 7.84, 8.80.