Substituted 1,4-dicyanobenzenes are prepared as electron-accepting photosensitizers. The efficiency of some photosensitized reactions is influenced remarkably by the substituent(s) of 1,4-dicyanobenzene. By using mono or dimethylated dicyanobenzene, the reactions proceed more rapidly as compared with that by using 1,4-dicyanobenzene itself.
                                    取代的 1,4-二
氰基苯被制备为电子接受光敏剂。一些光敏反应的效率受 1,4-二
氰基苯取代基的显着影响。与使用 1,4-二
氰基苯本身相比,使用单或二甲基二
氰基苯的反应进行得更快。