First of its kind book on Denitrogenative Transformations helps researchers and scientists working in organic chemistry, organometallic chemistry, and transition metal catalysis, as well as academicians, industry professionals. It comprises of all the types of polynitrogen heterocycles that are studied to undergo denitrogenative transformation. The first chapter introduces denitrogenative Transformation, its historical aspects and present status. The following chapters use a reaction-based approach to explain denitrogenative transformations in detail.