反应详情

温度

140 °C

A mixture of methyl 3-({(1S)-2-[(difluoromethyl)oxy]-1-methylethyl}oxy)-5-hydroxybenzoate (0.28 g, 1.01 mmol), 2-(azetidin-1-ylcarbonyl)-5-chloropyrazine (201 mg, 1.01 mmol) and potassium carbonate (280 mg, 2.03 mmol) in acetonitrile (5 mL) was stirred in a microwave reactor at 140° C. for 5 hours. The reaction mixture was reduced in vacuo, ethyl acetate (50 mL) added and the organics washed with water (50 mL), brine (50 mL), dried (MgSO4), filtered and reduced in vacuo. The crude oil was chromatographed on silica, eluting with 20 to 70% ethyl acetate in isohexane, to give the desired compound as a colourless oil (330 mg). 1H NMR δ (CDCl3): 1.38 (d, 3H), 2.37 (quin, 2H), 3.90 (s, 3H), 3.93-4.04 (m, 2H), 4.26 (d, 2H), 4.61-4.70 (m, 3H), 6.25 (t, 1H), 6.95 (t, 1H), 7.43-7.44 (m, 1H), 7.49-7.50 (m, 1H), 8.32 (d, 1H), 8.85 (d, 1H); m/z 438 (M+H)+

1. additionadded
2. washthe organics washed with water (50 mL), brine (50 mL)
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. customThe crude oil was chromatographed on silica
6. washeluting with 20 to 70% ethyl acetate in isohexane