反应详情

A solution of 5 g chromium trioxide in 10 ml water is added to a mixture of 20 g 6-bromo-α-(3-phenoxyphenyl)-2-pyridinemethanol (see Ex. 18) and 70 ml glacial acetic acid. After stirring for 1 hr. at room temperature, the reaction mixture is dded to ice:water and extracted with chloroform. The organic layer is washed with 2.5N NaOH, then with water, dried (Na2SO4) and solvent removed. Yield: 15.4 g of the title product, m.p. 65°-6° C. (from methanol); Br 22.87 (22.56).

1. customat room temperature
2. extractionwater and extracted with chloroform
3. washThe organic layer is washed with 2.5N NaOH
4. dry with materialwith water, dried (Na2SO4) and solvent
5. customremoved