In this context, the preparation of a 1,10-phenanthroline building block allowing an easy functionalization on the 5,6-positions by reaction with electrophilic species appears complementary to these methods. To our knowledge, only the synthesis of 5,6-dibenzylsulfanyl-1,10-phenanthroline was very recently described.(21) This work describes the synthesis of 5,6-bis(2-cyanoethylsulfanyl )-1,10-phenanthroline 1 as an attractive building block for further development of ...