反应 #3226

反应方程式

water

2-amino-4-chloro-6-trifluoromethylbenzoic acid

bis(trichloromethyl)carbonate

→

title compound

5-Chloro-7-trifluoromethyl-2H-3,1-benzoxazine-2,4(1H)-dione

溶剂

tetrahydrofuran

反应条件

后处理

1. 1
   萃取the resulting mixture extracted with ethyl acetate
2. 2
   干燥The combined extracts were dried (MgSO4)
3. 3
   过滤filtered
4. 4
   浓缩concentrated

实验过程

To a stirred solution of 2-amino-4-chloro-6-trifluoromethylbenzoic acid (0.53 g, 2.2 mM) in dry tetrahydrofuran (6 mL) under a nitrogen atmosphere was added bis(trichloromethyl)carbonate (0.218 g, 0.734 mM). The resulting solution was stirred at room temperature for 2 hr, poured into water and the resulting mixture extracted with ethyl acetate. The combined extracts were dried (MgSO4), filtered and concentrated to leave the title compound as a tan solid; MS(CI): 266 (M+H).

来源