反应详情

Pd/C (50 mg, 0.047 mmol, 10%) was added to a stirring solution of (E)-tert-butyl 3-(6-(but-2-en-2-yl)-2-(4-fluorophenyl)-3-(methylcarbamoyl)furo[2,3-b]pyridin-5-yl)benzoate (118 mg, 0.236 mmol) in EtOH (4.7 ml) at rt. The reaction was placed in a Parr bomb and charged with 50 PSI of H2 and the mixture was allowed to stir for 16 h at rt. Celite was added to the reaction mixture and the slurry was filtered through a pad of Celite washing with EtOAc. The filtrate was concentrated to give the expected product tert-butyl 3-(6-(sec-butyl)-2-(4-fluorophenyl)-3-(methylcarbamoyl)furo[2,3-b]pyridin-5-yl)benzoate (118 mg, 0.235 mmol, 100% yield) consistent by LCMS. LC-MS retention time: 2.38 min; m/z (MH+): 503. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Phenomenex-Luna 3u C18 2.0×30 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 1 mL/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 2 min, a hold time of 2 min, and an analysis time of 4 min where solvent A was 5% MeOH/95% H2O/10 mM ammonium acetate and solvent B was 5% H2O/95% MeOH/10 mM ammonium acetate. MS data was determined using a Micromass Platform for LC in electrospray mode.

1. additioncharged with 50 PSI of H2
2. additionCelite was added to the reaction mixture
3. filtrationthe slurry was filtered through a pad of Celite
4. washwashing with EtOAc
5. concentrationThe filtrate was concentrated