反应详情

To a 0° C. solution of concentrated sulfuric acid (125 mL, 2340 mmol) and nitric acid (11.79 mL, 185 mmol) was added 3-bromo-4-fluorobenzaldehyde (25.0 g, 123 mmol). The reaction was warmed to ambient temperature, during which time the solids dissolved. After 2 h, the reaction mixture was poured into a mixture of ice (500 mL) and water (250 mL). The resulting suspension was filtered through a medium frit affording 5-bromo-4-fluoro-2-nitrobenzaldehyde as a yellow solid.

1. dissolutiondissolved
2. filtrationThe resulting suspension was filtered through a medium frit