反应详情

A mixture of hydroquinone (15 g), mandelic acid (15 g), acetic acid (95 cm3) and sulphuric acid (5 cm3) was stirred at ambient temperature before filtering off solid material. The solid was washed with water and dried to give 5-hydroxy-2-oxo-3-phenyl-2,3-dihydrobenzofuran (14 g, 65%).

1. filtrationbefore filtering off solid material
2. washThe solid was washed with water
3. customdried