反应详情

温度

80 °C

To a solution of N-(4-methoxybenzyl)-2-(methoxymethyl)-N-(thiazol-2-yl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonamide (150 mg, 0.324 mmol) and 5-chloro-2-fluorobenzonitrile (50.55 mg, 0.324 mmol, Aldrich) in DMF (5.0 mL) was added Cs2CO3 (210 mg, 7.95 mmol) and the reaction mixture was heated at 80° C. for 16 h. The reaction mixture was diluted with water (100 mL) and extracted with ethyl acetate (2×50 mL). The combined organic layers were dried over sodium sulfate, filtered and concentrated under reduced pressure to obtain the crude material which was purified by column chromatography (silica gel 100-200 mesh and 0-30% ethyl acetate in hexane) to obtain 4-(4-chloro-2-cyanophenyl)-N-(4-methoxybenzyl)-2-(methoxymethyl)-N-(thiazol-2-yl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonamide (170 mg, 87.6%) as an off white solid. m/z (ESI) 596.8 (M+H)+.

1. extractionextracted with ethyl acetate (2×50 mL)
2. dry with materialThe combined organic layers were dried over sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customto obtain the crude material which
6. customwas purified by column chromatography (silica gel 100-200 mesh and 0-30% ethyl acetate in hexane)