反应详情

温度

120 °C

2-[(2-tert-Butyl-1,1-dioxido-3-oxo-5-phenyl-2,3-dihydroisothiazol-4-yl)amino]ethyl 4-methylbenzenesulfonate (150 mg, 0.313 mmol) was dissolved in dry MeCN (3 mL) under nitrogen atmosphere. 4-Hydroxyphenyl methanesulfonate (65 mg, 0.345 mmol) was added followed by potassium carbonate (217 mg, 1.567 mmol). The reaction mixture was heated in a microwave reactor at 120° C. for 15 mins. Potassium carbonate was filtered off and the reaction mixture was evaporated to dryness in a vacuum centrifuge. The crude product was purified by preparative HPLC affording the title compound (61 mg, 38.5%). 1H NMR (CDCl3, 500 MHz): δ 1.73 (s, 9H), 3.11 (s, 3H), 3.23-3.27 (m, 2H), 3.83-3.86 (m, 2H), 5.65 (bs, 1H), 6.83 (d, 2H), 7.20 (d, 2H), 7.43-7.46 (m, 3H), 7.50-7.54 (m, 2H); 13C NMR (CDCl3, 125 MHz): δ 27.83, 37.34, 43.30, 61.85, 66.50, 108.27, 115.77, 123.48, 125.07, 129.07, 130.06, 131.68, 135.18, 143.35, 157.21, 159.65; Mass Spectrum: M+NH4+511.8.

1. filtrationPotassium carbonate was filtered off
2. customthe reaction mixture was evaporated to dryness in a vacuum centrifuge
3. customThe crude product was purified by preparative HPLC