反应详情

温度

150 °C

A mixture of 427A (0.814 g, 6.41 mmol), 2-bromothiazole (1.0 g, 6.10 mmol) and t-BuOK (0.821 g, 7.32 mmol) in DMA (25 ml) was stirred at 150° C. under argon for 1 h, then cooled to rt. Treated with EtOAc (150 ml), the mixture was washed with H2O (50 ml), 3N NaOH (2×50 ml), H2O (50 ml), dried with Na2SO4. Removal of the solvent under reduced pressure followed by flash chromatography of the residue on silica gel (10%-25% EtOAc-hexanes) gave 427B (1.02 g, 80%) as a colorless oil. It has a retention time of 4.02 min (standard LC1 method, 8 min run). MS Found: (M+H)+=211.1

1. temperaturecooled to rt
2. washthe mixture was washed with H2O (50 ml), 3N NaOH (2×50 ml), H2O (50 ml)
3. dry with materialdried with Na2SO4
4. customRemoval of the solvent under reduced pressure