反应详情

To a stirring solution of 1,1′-carbonyldiimidazole (2.5 g, 15.4 mmol) in THF (15 mL) at room temperature under argon was added 4-(4-chlorophenyl)-2-hydrazinyl-3,4′-bipyridine (0.92 g, 3.1 mmol). The reaction mixture was stirred at room temperature for 45 min. The reaction mixture was then concentrated under vacuum to produce a yellow solid. This solid was stirred in an ice bath and water (25 mL) was added. Solid was collected by filtration and further washed with water (15 mL×2). After drying in an oven at 50° C. under reduced pressure overnight, 960 mg of the title compound was obtained as a yellow solid. HPLC/MS: retention time=1.985 min, [M+H]+=323. 1H NMR (DMSO-d6, 500 MHz): δ 12.61 (s, 1H), 8.50 (d, J=6.05 Hz, 2H), 7.94 (d, J=7.15 Hz, 1H), 7.36 (d, J=8.2 Hz, 2H), 7.23 (d, J=6.05 Hz, 2H), 7.18 (d, J=8.2 Hz, 2H), 6.68 (d, J=7.15 Hz, 1H).

1. concentrationThe reaction mixture was then concentrated under vacuum
2. customto produce a yellow solid
3. stirringThis solid was stirred in an ice bath
4. filtrationSolid was collected by filtration
5. washfurther washed with water (15 mL×2)
6. customAfter drying in an oven at 50° C. under reduced pressure overnight