反应详情

To a suspension of 1-benzyl-4-hydroxy-1,3-dihydro-benzoimidazol-2-one (0.104 g., 0.433 mmol) and 1-benzhydryl-azetidin-3-ol (0.114 g., 0.477 mmol) in 0.5 mL anhydrous THF was added triphenyl phosphine (0.125 g., 0.477 mmol) and diisopropyl azodicarboxylate (0.093 mL, 0.477 mmol). The reaction mixture was refluxed for 2 hours, then concentrated in vacuo and purified by preparative TLC (2% methanol in dichloromethane) to give 78 mg (0.17 mmol, 39.5%) of 4-(1-benzhydryl-azetidin-3-yloxy)-1-benzyl-1,3-dihydro-benzoimidazol-2-one as a yellow glass. MS: 462 (M+H)+.

1. temperatureThe reaction mixture was refluxed for 2 hours
2. concentrationconcentrated in vacuo
3. custompurified by preparative TLC (2% methanol in dichloromethane)