反应详情

The above acetophenones are prepared as in Steps I and II of Example 2. (1) Substituting phenylacetic acid for p-chlorophenylacetic acid and benzene for chlorobenzene affords 2-bromo-2-phenylacetophenone. (2) The preparation of p-chloro-2-bromo-2-(p-chlorophenyl)acetophenone is described in Steps I and II of Example 2. (3) Substituting p-fluorophenylacetic acid for p-chlorophenylacetic acid and fluorobenzene for chlorobenzene affords p-fluoro-2-bromo-2-(p-fluorophenyl)acetophenone. (4) Substituting p-isopropoxyphenylacetic acid for p-chlorophenylacetic acid and isopropoxybenzene for chlorobenzene affords p-isopropoxy-2-bromo-2-(p-isopropoxyphenyl)acetophenone. (5) Substituting m,p-dimethoxyphenylacetic acid for p-chlorophenylacetic acid and m,p-dimethoxybenzene for chlorobenzene affords m,p-dimethoxy-2-bromo-2-(m,p-dimethoxyphenyl)acetophenone.