| 摘要 |
NEW MATERIAL:A 2,4,5-triphenylimidazole compound expressed by formula I [A is formula II (R1-R5 is H, alkyl, alkoxy, F, Cl or Br)] and a dimer thereof expressed by formula III. EXAMPLE:2-(2,3-Dichlorophenyl)-4,5-diphenylimidazole. USE:An intermediate for agricultural chemicals, base source for photographic materials, intermediate for dimer and photooxidizing agent useful for photoresists, PS plates, proof materials, etc., as the dimer. PREPARATION:For example, ammonium acetate and benzil are dissolved in glacial acetic acid and 2,3-dichlorobenzaldehyde is added and reacted therewith to give the exemplified 2-(2,3-dichlorophenyl)4,5-diphenylimidazole, which is then dimerized to afford the dimer.
|
