反应详情

Methyl 5-(3,4,5,6-tetramethoxy-2-methylbenzyl)-2-phenoxybenzoate (0.220 g, 0.487 mmol) was dissolved in a mixed solution of an aqueous 1N NaOH solution (3 ml) and 1,4-dioxane (5 ml) and the resulting solution was stirred at room temperature for 12 hours. The reaction solution was diluted with water, rendered acidic with concentrated hydrochloric acid and then extracted with ether. The extract was washed with water and then dried, and the solvent was removed by distillation. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=2:1) to obtain the titled compound (0.210 g, 0.479 mmol, 98%).

1. extractionextracted with ether
2. washThe extract was washed with water
3. customdried
4. customthe solvent was removed by distillation
5. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=2:1)