主题词：Synthesis and biological activity; Synthesis and Characterization of Heterocyclic Compounds; Synthesis and Biological Evaluation; Chemical Synthesis and Analysis; Synthesis of Organic Compounds; Metal complexes synthesis and properties; Multicomponent Synthesis of Heterocycles; Crystal structures of chemical compounds; Synthesis and Reactions of Organic Compounds; Phenothiazines and Benzothiazines Synthesis and Activities; Quinazolinone synthesis and applications; Synthesis of heterocyclic compounds; Molecular Sensors and Ion Detection; Asymmetric Synthesis and Catalysis; Analytical Chemistry and Chromatography; Click Chemistry and Applications; Carbohydrate Chemistry and Synthesis; Synthetic Organic Chemistry Methods; Fluorine in Organic Chemistry; Synthesis and Reactivity of Heterocycles; Structural and Chemical Analysis of Organic and Inorganic Compounds; Porphyrin and Phthalocyanine Chemistry; Synthesis and Reactivity of Sulfur-Containing Compounds; Synthesis and Catalytic Reactions; Oxidative Organic Chemistry Reactions