反应详情

To a solution of 4.47 g (30.6 mmol) of potassium 4-methylphenolate in 150 ml of dimethyl-formamide a solution of 3.90 g (15.3 mmol) of 2-chloro-1-(4-hydroxy-3,5-di-isopropylphenyl)-ethanone in 70 ml dimethylformamide is added at room temperature within a period of 100 minutes. After additional 2 hours of stirring at room temperature the pH is adjusted to 6-7 with 1 N HCl and the mixture is extracted with ethyl acetate. The collected organic phases are washed with water, dried and evaporated. Crystallization of the crude product from ethyl acetate/hexane gives 1.8 g of compound 105, m.p. 124-125° C.

1. extractionthe mixture is extracted with ethyl acetate
2. washThe collected organic phases are washed with water
3. customdried
4. customevaporated
5. customCrystallization of the crude product from ethyl acetate/hexane