反应详情

温度

120 °C

A suspension of N′-(3-cyano-6-methyl-pyridin-2-yl)-N,N-dimethyl-formamidine (1.00 g, 5.3 mmol) and 3-amino-4-(4-tert-butoxycarbonylamino-phenylsulfanyl)-benzoic acid methyl ester (prepared in Example 385C) (1.99 g, 5.3 mmol) in AcOH (20 mL) was heated at 120° C. for 30 minutes under N2. After cooling to room temperature, the reaction mixture was portioned between AcOEt (250 mL) and H2O (200 mL), and then made basic to pH 9 with K2CO3 under stirring. The organic layer was separated, washed with 10% NaHCO3, H2O and brine, dried over MgSO4, and evaporated to give pale brown oil. The oily residue was separated by silica gel column chromatography (AcOEt) to yellow amorphous, which was solidified by the treatment of i-Pr2O. The resulting solid was collected by filtration, washed with i-Pr2O, and dried at 40° C. overnight under reduced pressure to give the title compound as pale yellow crystal (1.70 g, 62%).

1. temperatureAfter cooling to room temperature
2. customThe organic layer was separated
3. washwashed with 10% NaHCO3, H2O and brine
4. dry with materialdried over MgSO4
5. customevaporated
6. customto give pale brown oil
7. customThe oily residue was separated by silica gel column chromatography (AcOEt) to yellow amorphous, which
8. filtrationThe resulting solid was collected by filtration
9. washwashed with i-Pr2O
10. customdried at 40° C. overnight under reduced pressure