反应详情

温度

65 °C

To a suspension of 3-(2-fluoro-4-iodo-phenylamino)-1-(2-triisopropylsilanyloxy-ethyl)-1H-pyrrolo[3,2-c]pyridine-2-carboxylic acid methyl ester (90 mg, 0.15 mmol) in ethanol (2 mL) was added a 1M aqueous solution of sodium hydroxide (0.15 mL, 0.15 mmol). The reaction mixture was heated at 65° C., stirred for 1 hour, cooled to room temperature, concentrated and azeotroped with toluene. The resultant residue was suspended in THF to which O-(2-vinyloxy-ethyl)-hydroxylamine (31 mg, 0.30 mmol), EDCI (37 mg, 0.19 mmol), HOBt (30 mg, 0.22 mmol) and DIPEA (105 μl, 0.60 mmol) were added. The reaction mixture was stirred at room temperature for 16 h then concentrated to give a residue which was purified by flash chromatography (Si-PPC, cyclohexane:EtOAc, gradient 100:0 to 0:100). The title compound was obtained as a yellow solid (58 mg, 57%). LCMS (method B): RT=3.24 min, M+H+=683.

1. temperaturecooled to room temperature
2. concentrationconcentrated
3. customazeotroped with toluene
4. additionwere added
5. stirringThe reaction mixture was stirred at room temperature for 16 h
6. concentrationthen concentrated
7. customto give a residue which
8. customwas purified by flash chromatography (Si-PPC, cyclohexane:EtOAc, gradient 100:0 to 0:100)