反应详情

温度

70 °C

To a vial charged with 3-phenyl-1H-pyrazolo[3,4-d]thiazol-5-ylamine (30 mg, 0.139 mmol), PS-DMAP (Argonaut resin, 0.56 g, 6 equiv.), and a stirring bar was added THF (2 mL) and 2-methoxyacetyl chloride (63 μL, 0.694 mmol). The reaction mixture was stirred at 70° C. for 3.5 hours, then cooled to room temperature and treated with PS-trisamine (Argonaut resin, 0.51 g, 15 equiv.) at 50° C. for 3 hours. The resin was filtered, washed with THF and the solvent was evaporated. Purification on silica gel with 0-10% MeOH in CH2Cl2 as eluent provided 15 mg (37% yield) of 2-methoxy-N-(3-phenyl-1H-pyrazolo[3,4-d]thiazol-5-yl)-acetamide as a white solid. 1H-NMR (d6-DMSO) δ: 13.6 (broad s, 1H), 12.3 (broad s, 1H), 7.73 (broad s, 2H), 7.53 (broad s, 2H), 7.37 (broad s, 1H), 4.20 (s, 2H), 3.37 (s, 3H), 2.18 (s, 3H); HPLC/MS m/z: 289.1 [MH]+.

1. temperaturecooled to room temperature
2. filtrationThe resin was filtered
3. washwashed with THF
4. customthe solvent was evaporated
5. customPurification on silica gel with 0-10% MeOH in CH2Cl2 as eluent