主题词：Synthesis and Reactions of Organic Compounds; Synthesis and Characterization of Heterocyclic Compounds; Synthesis and biological activity; Synthesis and Biological Evaluation; Synthesis of heterocyclic compounds; Chemical Reaction Mechanisms; Fluorine in Organic Chemistry; Synthesis and Reactivity of Sulfur-Containing Compounds; Chemical synthesis and pharmacological studies; Multicomponent Synthesis of Heterocycles; Chemical Synthesis and Reactions; Chemical Synthesis and Analysis; Asymmetric Synthesis and Catalysis; Synthesis and Reactivity of Heterocycles; Organic Chemistry Cycloaddition Reactions; Synthesis of Organic Compounds; Chemical Reactions and Mechanisms; Oxidative Organic Chemistry Reactions; Structural and Chemical Analysis of Organic and Inorganic Compounds; Synthesis and Characterization of Pyrroles; Synthesis and Catalytic Reactions; Synthetic Organic Chemistry Methods; Phenothiazines and Benzothiazines Synthesis and Activities; Sulfur-Based Synthesis Techniques; Quinazolinone synthesis and applications