反应详情

4-Ethyl-2-fluoro-2'-hydroxybenzanilide (29.0 gm.) is heated for 40 minutes in a Wood's metal bath at 240°C. The reaction mixture is then cooled, taken up in chloroform and the chloroform solution treated with carbon, dried over magnesium sulfate and concentrated in vacuo to give 2-(4-ethyl-2-fluorophenyl)benzoxazole.

1. temperatureThe reaction mixture is then cooled
2. dry with materialdried over magnesium sulfate
3. concentrationconcentrated in vacuo