反应详情

To a solution of tert-butyl [(2R)-2-(3-chlorophenyl)-2-hydroxyethyl][2-(4-hydroxyphenyl)ethyl]carbamate (600 mg) and potassium carbonate (254 mg) in dimethylsulfoxide (6.0 ml) was added methyl 5,6-dichloro-3-pyridinecarboxylate (347 mg), and the mixture was stirred at room temperature for 12 hours. The mixture was partitioned between ethyl acetate and water. The organic layer was separated, washed with water and brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=2/1) to give methyl 6-[4-[2-[(tert-butoxycarbonyl)[(2R)-2-(3-chlorophenyl)-2-hydroxyethyl]amino]ethyl]phenoxy]-5-chloronicotinate (770 mg).

1. customThe mixture was partitioned between ethyl acetate and water
2. customThe organic layer was separated
3. washwashed with water and brine
4. dry with materialdried over magnesium sulfate
5. customevaporated under reduced pressure
6. customThe residue was purified by column chromatography on silica gel (hexane/ethyl acetate=2/1)