Реакция #2254156

Уравнение реакции

2-amino-3-bromo-5-chlorobenzoic acid

phosgene

→

title compound

Выход 114.2%

8-Bromo-6-chloro-1H-benzo[d][1,3]oxazine-2,4-dione

Выход 114.2%

Растворители

dioxane

Условия реакции

Обработка

1. 1
   Концентрированиеconcentrated in vacuo
2. 2
   ДругоеThe resulting solid was crushed
3. 3
   Другоеfurther dried in vacuo

Методика

To a solution of 2-amino-3-bromo-5-chlorobenzoic acid (10.0 g, 39.9 mmol) in dioxane (170 mL) was added phosgene (20% in toluene, 42.0 mL, 79.9 mmol) over a period of 15 min. The reaction was stirred at room temperature for 48 h and then concentrated in vacuo. The resulting solid was crushed and further dried in vacuo to yield the title compound (12.6 g, 114%), which was used in the following step without further purification.

Источник