反应详情

Sodium cyanide (395 mg, 8.06 mmol) was added to a mixture of 4-(pyridin-4-yloxy)aniline (500 mg, 2.69 mmol) and cyclobutanone (376 mg, 5.37 mmol) in AcOH (99%, 6 mL) in a microwave vial. The reaction mixture was irradiated with microwaves (Biotage) at 120° C. for 30 min. The slightly yellowish solution was concentrated to dryness. The residue was diluted with water and extracted with EtOAc (2×). The combined organic layers were dried over MgSO4 and concentrated to dryness to afford 463 mg (65%) of 1-(4-(pyridin-4-yloxy)phenylamino)-cyclobutanecarbonitrile as a yellow oil. 1H NMR (400 MHz, CDCl3) δ 8.46-8.38 (m, 2H), 7.02-6.94 (m, 2H), 6.79 (m, 2H), 6.72-6.64 (m, 2H), 2.86-2.74 (m, 2H), 2.46-2.34 (m, 2H), 2.22 (m, 2H)

1. customThe reaction mixture was irradiated with microwaves (Biotage) at 120° C. for 30 min
2. concentrationThe slightly yellowish solution was concentrated to dryness
3. additionThe residue was diluted with water
4. extractionextracted with EtOAc (2×)
5. dry with materialThe combined organic layers were dried over MgSO4
6. concentrationconcentrated to dryness