反应详情

17.63 g (72.6 mmoles) of 2-hydroxy-4-benzyloxyacetophenone, 17.60 g (165.8 mmoles) of benzaldehyde and 35.20 g of 50% strength sodium hydroxide solution in 200 ml of ethanol were stirred for 3 days, during which crystals precipitated. The crystal sludge was acidified with 100 ml of 5N hydrochloric acid and was stirred for 10 minutes. The mixture was filtered with suction to give 40.0 g of moist crystals. The crude product was recrystallized from 800 ml of ethanol.

1. customprecipitated
2. filtrationThe mixture was filtered with suction