This book recounts the synthesis of diverse phenanthridine and quinoxaline derivatives, delving into the reactions of epoxy compounds. The author explores the challenges faced in the alkylation of amines, especially cyclic amines, and presents a novel approach utilizing epoxy compounds as starting materials. The work builds upon existing methodologies, such as the catalytic alkylation of amines and cyclization reactions, to achieve the desired syntheses. Furthermore, the author investigates the effect of various catalysts and reaction conditions on the yield and selectivity of the reactions. The insights gained from this research contribute to a deeper understanding of the mechanisms involved in these reactions and expand the possibilities for synthesizing complex nitrogen-containing heterocyclic compounds.