反应详情

100 g of 3,4,5-triethoxybenzoic acid was dissolved in 150 ml of a 48% aqueous HBr solution and 300 ml of acetic acid, and the resultant solution was heated at 100° C. for 2 hr while stirring. The reaction mixture was cooled, and the formed precipitate was separated by filtration and washed with water. The solid was recrystallized from 1 l of ethanol to prepare 50 g of the product compound as a white solid.

1. temperatureThe reaction mixture was cooled
2. customthe formed precipitate was separated by filtration
3. washwashed with water
4. customThe solid was recrystallized from 1 l of ethanol
5. customto prepare 50 g of the product compound as a white solid