New 2-benzyl-1,10-phenanthrolines, substituted at the 2′ position  by electron-withdrawing groups, were synthesized through nucleophilic  substitution involving 2-chloro-1,10-phenanthroline and substituted  benzyllithiums, respectively. The expected reversible photoinduced  proton transfer reaction of such compounds were studied.
                                    通过 2-
氯-
1,10-菲罗啉和取代的苄基
锂分别进行亲核取代,合成了新的 2-苄基-
1,10-菲罗啉,它们在 2′位被抽电子基团取代。研究了这类化合物的预期可逆光诱导质子转移反应。