反应详情

4-Bromo-phenethylamine (4.45 g, 22.25 mmol) was dissolved in ethyl formate (100 mL). 5 mg of TsOH was added. The clear colorless solution was heated in an oil bath to reflux for 16 h. The reaction solution was cooled to r.t, passed through a short silica gel plug, rinsed with ethyl acetate. The filtrate was evaporated to yield 5.1 g (100%) of the title compound as a liquid which became a solid on standing. MS: 230 (M+H+).

1. temperatureThe clear colorless solution was heated in an oil bath
2. temperatureto reflux for 16 h
3. temperatureThe reaction solution was cooled
4. washrinsed with ethyl acetate
5. customThe filtrate was evaporated