反应详情

温度

150 °C

4-Chloro-2-[4-(difluoromethoxy)benzyl]-5-phenylisothiazol-3(2H)-one 1,1-dioxide (40 mg, 0.1 mmol) and 4-morpholinoaniline (36 mg 0.2 mmol) were mixed in MeCN (1 ml). The reaction mixture was heated in a microwave reactor at 150° C. for 15 mins and then evaporated to dryness. The residue was purified by column chromatography (ISOLUTE SI, 5 g/25 ml), eluting with DCM, then MeOH/DCM (1:99) and a product mixture was obtained. It was further purified by re-chromatography (ISOLUTE SI, 5 g/25 ml), eluting with EtOAc/heptane (10:90, then 25:75), to give the title compound (14 mg, 26%) as a yellow solid. 1H NMR (400 MHz, CDCl3): δ 2.96-2.99 (m, 4H), 3.78-3.81 (m, 4H), 4.86 (s, 2H), 6.47-6.51 (m, 2H), 6.50 (t, J=74 Hz, 1H), 6.57-6.60 (m, 2H), 7.09-7.13 (m, 7H), 7.17-7.22 (m, 1H), 7.52-7.57 (m, 2H); 13C NMR (100 MHz, CDCl3): δ 42.8, 49.4, 66.6, 109.7, 115.3, 115.8 (t, J=259 Hz), 119.6, 123.5, 124.7, 127.9, 128.9, 129.3, 130.6, 131.2, 131.5, 149.1, 151.2, 159.3; Mass Spectrum: M−H+ 540.

1. customevaporated to dryness
2. customThe residue was purified by column chromatography (ISOLUTE SI, 5 g/25 ml)
3. washeluting with DCM
4. customMeOH/DCM (1:99) and a product mixture was obtained
5. customIt was further purified by re-chromatography (ISOLUTE SI, 5 g/25 ml)
6. washeluting with EtOAc/heptane (10:90