反应详情

温度

105 °C

A mixture of 11 (18.3 mg, 50.1 μmol), EtOH (2.0 mL) and 10% aqueous NaOH (1.0 mL) was refluxed (oil bath temp. 105° C.) for 40 min. The mixture was poured onto water (3 mL), extracted with ethyl acetate (3×10 mL). The combined organic extracts were dried (MgSO4) and concentrated. The product was isolated by PTLC using dichloromethane:methanol (19:1) as eluent to give 12 as a white solid (7.6 mg, 68%); 1H NMR (400 MHz, CDCl3) δ 10.30-10.10 (bs, NH), 10.74 (d, J=1.9 Hz, 1H), 8.31 (d, J=1.9 Hz, 1H), 7.90 (s, 1H), 7.39 (m, 2H), 7.16 (dd, J=5.0, 3.6 Hz, 1H).

1. additionThe mixture was poured onto water (3 mL)
2. extractionextracted with ethyl acetate (3×10 mL)
3. dry with materialThe combined organic extracts were dried (MgSO4)
4. concentrationconcentrated
5. customThe product was isolated by PTLC