反应详情

A mixture of methyl 5-chloro-3-formyl-2-hydroxybenzoate (73.2 g), ethylene glycol (350 ml) and trimethylchlorosilane (129 ml) is stirred at room temperature for 2 hours. The reaction mixture is poured into a mixture of an aqueous saturated sodium bicarbonate solution and trimethylamine, and the mixture is extracted with ethyl acetate. The extracted is washed with water, dried and concentrated to remove solvent, whereby methyl 5-chloro-3-(1,3-dioxolan-2-yl)-2-hydroxybenzoate (86 g) is obtained as yellow powder.

1. extractionthe mixture is extracted with ethyl acetate
2. washThe extracted is washed with water
3. customdried
4. concentrationconcentrated
5. customto remove solvent