反应详情

7.5 g of 2-amino benzoic acid hydrochloride was mixed with 10 ml of diphosgene and the mixture was stirred in 150 ml of dioxane for 40 minutes at reflux. The resulting mixture was cooled and filtered. Yield: 5.7 g of title compound.

1. temperatureat reflux
2. temperatureThe resulting mixture was cooled
3. filtrationfiltered