反应详情

By following the procedure described in Example 5, Step B, using as the reactants 2',3'-dichloro-4'-methoxy-2-methylbutyrophenone (26 g., 0.10 mole), acetic acid (75 ml.) and bromine (16 g., 0.10 mole), there is obtained 2-bromo-2-methyl-2',3'-dichloro-4'-methoxybutyrophenone.