Nitration of Hector's Base gives both mono and dinitro products. In each case, only one out of two phenyl rings involves in the nitration process and that ring is the 3-anilino portion of the Hector's Base. The protonation of the exocyc 1 i c nitrogen of Hector's base seems to deacti vate the phenyl ring attached to nitrogen at position 4, which in turn, does not react with nitronium ion. Finally, acetylation of nitrocompounds of Hector's Base and nitration of Hector's Base in acetylating mixture have also been discussed.