反应详情

2-Amino-m-cresol (4.9 g, 40 mmol) was dissolved in a mixture of acetonitrile (90 mL) and water (80 mL) containing NaHCO3 (6.7 g, 80 mmol) with vigorous stirring. 3-Bromo-4-chloro-benzoyl chloride (10.1 g, 40 mmol, Step 2A) was added in several portions and the mixture was stirred at room temperature for 3 hrs. The resulting precipitates were filtered, washed with water and tert-butyl methyl ether, then dried to yield 3-bromo-4-chloro-N-(2-hydroxy-6-methyl-phenyl)-benzamide (11.3 g). MS (M+H)+: 339.7/341.7; tR=2.36 min. (method 1)

1. customThe resulting precipitates
2. filtrationwere filtered
3. washwashed with water and tert-butyl methyl ether
4. customdried