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. Methyl salicylate (52 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 20 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 (9 mg, 6%). 1H NMR (CDCl3, 500 MHz): δ 1.74 (s, 9H), 3.27 (q, 2H), 3.97-4.00 (m, 5H), 6.17 (t, 1H), 6.86 (d, 1H), 7.05 (t, 1H), 7.44-7.48 (m, 4H), 7.52-7.56 (m, 2H), 7.85 (dd, 1H); 13C NMR (CDCl3, 125 MHz): δ 27.85, 43.53, 52.52, 61.69, 67.49, 107.84, 114.40, 121.12, 121.69, 125.42, 129.00, 129.85, 131.69, 132.27, 133.85, 135.56, 158.01, 159.56, 166.79; Mass Spectrum: M+H+ 459.0.

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