反应详情

N-(3-Chloro-4-fluorophenyl)-4-(3-morpholin-4-ylpropyl)-1,2,5-oxadiazole-3-carboxamide (10.0 mg, 27 μmol) was suspended in benzene (0.4 mL) under an atmosphere of nitrogen and phosphorus pentachloride (6.2 mg, 29.8 μmol) was added. The solution was heated at reflux for 2.5 h. The volatiles were evaporated in vacuo. The reaction was dissolved in EtOH (0.3 mL) and hydroxylamine (40 μL, 0.7 mmol) (50% solution in water) was added to the reaction. After stirring for 1 h, the reaction solution was diluted with MeOH and purified by preparative LCMS to give the desired product (5.2 mg, 50%). LCMS for C16H20ClFN5O3 (M+H)+: m/z=384.1.

1. temperatureThe solution was heated
2. temperatureat reflux for 2.5 h
3. customThe volatiles were evaporated in vacuo
4. dissolutionThe reaction was dissolved in EtOH (0.3 mL)
5. custompurified by preparative LCMS