反应详情

In the same manner as described in step 5 of Example 78, using 1-(4-chloro-3-fluoro-phenyl)-2-thiocyanato-ethanone (2.45 g, 10.7 mmol), prepared in the previous step, and hydrogen bromide (30% in acetic acid, 16 mL), the solid was collected by suction filtration to give 2-bromo-4-(4-chloro-3-fluorophenyl)-1,3-thiazole (2.1 g, 68%). The material was used without further purification, MS (ES) m/z 293[M+H+].

1. filtrationthe solid was collected by suction filtration