The chemical hydrazine (NH2NH2) and its derivatives have several
applications being also responsible for a large number of chemical transformations.
This class has applications as rocket fuel and being present in the composition of
explosives, in the control of corrosion, and the area of polymers. They also have full
use in the development of bioactive substances being of great importance in medicinal
chemistry. In the exercises of this chapter, we can synthesize several rings using
hydrazine and its derivatives, and it is up to the readers to identify them.
Keywords: Bioactive compounds, Chemical transformations, Drugs, Exercises,
Heteroaromatic compounds, Hydrazine, Medicinal chemistry, Molecules,
Reaction conditions, Reagents, Retrosynthetic analysis, Substances, Synthesis,
Synthons.