反应详情

In a flask were combined 2-bromo-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (125 mg, 0.34 mmol), (R)-2-amino-3,3-dimethyl-1-pyrrolidin-1-yl-butan-1-one hydrochloride (155 mg, 0.70 mmol), EDC (148 mg, 0.77 mmol) and HOBt (104 mg, 0.772 mmol). DMF (4.0 mL) was added followed by i-Pr2NEt (0.19 mL, 1.07 mmol). The reaction mixture was stirred at room temperature for 1 h and then concentrated. The residue was taken up in EtOAc and 10% citric acid and the organic layer washed with 10% citric acid, sat. NaHCO3, sat LiCl and brine, dried over MgSO4, and concentrated to give 162 mg (90%) of 2-bromo-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2,2-dimethyl-1-(pyrrolidine-1-carbonyl)-propyl]-amide as a viscous brown oil.

1. customIn a flask were combined
2. concentrationconcentrated
3. wash10% citric acid and the organic layer washed with 10% citric acid, sat. NaHCO3
4. dry with materialdried over MgSO4
5. concentrationconcentrated