反应详情

13.9 parts of 1-phenacylpyridinium bromide and 14.27 parts of 1-(4-chlorophenyl)-3-(4-dimethylaminophenyl)-1-oxoprop-2-ene are heated at 120° C. for 3.5 hours together with 34 parts of ammonium acetate in 50 parts of glacial acetic acid. Working up as described in Example 1 gives 4-(4'-dimethylaminophenyl)-2-(4'-chlorophenyl)-6-phenylpyridine in the form of a colorless powder, which dissolves in glacial acetic acid to give a yellow color (λmax: 425 nm).