反应详情

温度

60 °C

11.54 g of 3,3,4-trichloro-5-methoxy-1 ,3-dihydro-indol-2-one (43.3 mmol) was suspended in glacial AcOH (200 mL). 3.343 g (21.7 mmol) of N,N-dichlorourethane was added and the mixture was stirred at 60° C. for 2 days. The reaction mixture was cooled to room temperature, the precipitate collected by filtration and dried on high vacuum. Re-crystallization from benzene (150 mL) yielded 6.135 g of product (containing 5% of the start. material as an impurity).

1. temperatureThe reaction mixture was cooled to room temperature
2. filtrationthe precipitate collected by filtration
3. customdried on high vacuum