反应详情

温度

110 °C

1-[2-Hydroxy-5-(trifluoromethyl)phenyl]ethanone, (Preparation 860, 7.0 g, 0.0343 mol) was taken in dimethylformamide dimethylacetal (18.2 mL, 0.137 mol) at room temperature and then heated at 110° C. for 30 min. The reaction mixture was concentrated in vacuo and the crude product was crystallised from 2-propanol to give the title compound as bright yellow solid (6.4 g).

1. concentrationThe reaction mixture was concentrated in vacuo
2. customthe crude product was crystallised from 2-propanol