反应详情

To a solution of 3-(5-methyl-2-phenyl-4-oxazolylmethoxy)-5-isoxazolylmethanol (2.86 g) in toluene (50 ml) was slowly added thionyl chloride (0.80 mL) at room temperature and the mixture was stirred under reflux for 30 min. After cooling, the reaction mixture was poured into saturated aqueous sodium hydrogencarbonate and extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated to give 5-chloromethyl-3-(5-methyl-2-phenyl-4-oxazolylmethoxy)isoxazole (2.70 g, yield 89%) as colorless crystals. The crystals were recrystallized from ethyl acetate-hexane. melting point: 105-106° C.

1. customat room temperature
2. temperatureunder reflux for 30 min
3. temperatureAfter cooling
4. extractionextracted with ethyl acetate
5. washThe ethyl acetate layer was washed with saturated brine
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationconcentrated