反应详情

温度

60 °C

A mixture of ethyl 4-(3-chloro-6-phenyl-2-pyridyl)benzoate (1.00 g), 1M aqueous sodium hydroxide solution (5 ml), tetrahydrofuran (10 ml) and ethanol (20 ml) was stirred at 60° C. for 1 hr. After cooling, the reaction mixture was poured into water, and 1 M hydrochloric acid (5 ml) was added. The crystals were collected by filtration and recrystallized from tetrahydrofuran-hexane to give 4-(3-chloro-6-phenyl-2-pyridyl)benzoic acid (0.83 g, yield 91%) as colorless crystals. melting point: 254–255° C.

1. temperatureAfter cooling
2. additionwas added
3. filtrationThe crystals were collected by filtration
4. customrecrystallized from tetrahydrofuran-hexane