反应详情

2-[3-(4-Imidazo[1,2-a]pyridin-2-ylphenyl)-1H-1-pyrazolyl]acetic acid (51 mg), 2,2′-dipicolylamine (32 mg), and 1-hydroxybenzotriazole (27 mg) were dissolved in N,N-dimethylformamide (1 mL), and triethylamine (56 μL) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (38 mg) were added to the solution, followed by stirring at room temperature for 2 hours. Water was added to the reaction mixture, followed by extraction with chloroform and then drying over magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was subjected to flash column chromatography. Fractions eluted by dichloromethane-methanol (20:1) were concentrated under reduced pressure, and the solid was recovered through filtration by use of diethyl ether, to thereby yield the title compound (58 mg).

1. extractionfollowed by extraction with chloroform
2. dry with materialdrying over magnesium sulfate
3. customThe solvent was evaporated under reduced pressure
4. washFractions eluted by dichloromethane-methanol (20:1)
5. concentrationwere concentrated under reduced pressure
6. filtrationthe solid was recovered through filtration by use of diethyl ether