反应详情

To a solution of 130 mg (0.676 mmol) of 3'-trimethylsilylacetophenone and 127 mg (0.774 mmol) of methyl 4-formylbenzoate in 4.5 ml of tetrahydrofuran (THF) were added 128 mg (3.20 mmol) of NaOH and 3 ml of hot water, and the mixture was stirred at room temperature overnight. The reaction mixture was adjusted with 7 ml of 0.5N-HCl to pH6, and then the aqueous solution was extracted with ethyl acetate. The extract was washed with 0.05N-HCl and H2O, dried and evaporated. The residue was purified by column chromatography affording 133 mg of pale yellow powder (yield 61%), which was recrystallized from a mixture of methylene chloride, methanol and n-hexane to give 98 mg of pale yellow needles, m.p. 179°-180° C. (yield 45%).

1. extractionthe aqueous solution was extracted with ethyl acetate
2. washThe extract was washed with 0.05N-HCl and H2O
3. customdried
4. customevaporated
5. customThe residue was purified by column chromatography