Akbas, EsvetRuzgar, AdemSahin, ErtanErgan, Erdem2025-05-102025-05-1020190022-152X1943-519310.1002/jhet.34832-s2.0-85060922874https://doi.org/10.1002/jhet.3483https://hdl.handle.net/20.500.14720/13578Ergan, Erdem/0000-0002-2985-6123; Ruzgar, Adem/0000-0001-6922-043XIn this research, 5-benzoyl-6-phenyl-4-(4-trifluoromethylphenyl)-2-{oxo and thioxo}-3,4-dihydro-1H-pyrimidines (1, 2) were synthesized by using multicomponent cyclocondensation reaction under microwave irradiation and classical heating. Compounds 3, 4, 6, 7, and 8 obtained reactions of 5-benzoyl-6-phenyl-4-(4-trifluoromethylphenyl)-2-thioxo-3,4-dihydro-1H-pyrimidine (1) and acetic anhydride, diethyl 2-bromomalonate, bromoacetic acid, 3-bromopropionic acid, methyl iodide, respectively. Compound 4 was both acetylated and hydrolyzed in acetic acid to give compound 5. The structures of all compounds were determined by using spectroscopic techniques like FT-IR, H-1/C-13 NMR, and elemental analyses, and the structures of compounds 1 and 3 were analyzed by X-ray crystal analysis. In addition, the quantum chemical parameters and full geometry optimizations for all compounds were computed using density functional theory based on B3LYP and the 6-31G (d, p) basis set.eninfo:eu-repo/semantics/closedAccessArticle563Q2Q210031011WOS:000461906200031