反应详情

温度

65 °C

5-{2-[2-Chloro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1-hydroxy-1-trifluoromethyl-propyl}-3-methyl-3H-benzooxazol-2-one (200 mg, obtained in Example 186, step 1), methyl-5-bromopyridine-3-carboxylate (169 mg, [CAS Reg. No. 29681-44-5]) and dichloro(1,1′-bis(diphenylphosphino)ferrocene)palladium(II)dichloromethane adduct (29 mg) were dissolved in dioxane (5 mL) and water (1.7 mL). To the reaction mixture was added 2.0 M aqueous Na2CO3 (0.29 mL). The mixture was heated to 65° C. over night. The reaction mixture was cooled, poured into ice/water and extracted three times with ethyl acetate. The combined organic layers were washed with brine, dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate) to give the title compound as a colorless foam (110 mg, 52%). MS (m/e)=521.1 [M+H+].

1. temperatureThe reaction mixture was cooled
2. extractionextracted three times with ethyl acetate
3. washThe combined organic layers were washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. customthe solvent was evaporated
7. customThe residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate)