反应详情

To a solution of 7-hydroxy-4-methyl-chromen-2-one (0.5210 g, 3.0 mmol) and benzoyl chloride (0.4844 g, 0.4 mL, d=1.211 g/mL, 3.4 mmol) in THF (40 mL) was added Et3N (1 mL) at room temperature. The reaction mixture was stirred at room temperature overnight and filtered. The filtrate was concentrated to give the crude product 7-benzoyloxy-4-methyl-coumarin.

1. filtrationfiltered
2. concentrationThe filtrate was concentrated