反应详情

4-Fluoroaniline (100 g) and 2,5-dimethoxytetrahydrofuran (124.9 g) were added to acetic acid (500 ml) and the mixture was stirred at a refluxing temperature for 1 h. After cooling to room temperature, the reaction mixture was added to water (2.5 Liters) and the mixture was stirred further for 30 min. The precipitated crystals were recrystallized from a mixed solvent of methanol-acetone (ratio=2:1) to give 1-(4-fluorophenyl)pyrrole (156 g), melting point: 57–58° C.

1. stirringthe mixture was stirred further for 30 min
2. customThe precipitated crystals were recrystallized from a mixed solvent of methanol-acetone (ratio=2:1)