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Part-IIIExperimentalprocedure for the compound (VIIi) to get of 5-benzoyl-4-(3-hydroxyphenyl)-6-methyl-3,4-dihydro-1H-pyrimidin-2-one (VIIxix).M.P. : 256-2258 o C; Yield 57%.Mol. Formula : C 18 H 16 N 2 O 3 ; Mol. Wt. 308.33IR(KBr) cm -1 : 3378(γ OH ), 3282(γ NH ), 1715(γ CO ), 1644(γ CONH ).20. Synthesis of [4-(4-chlorophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl](phenyl)methanone (VIIxx) from benzoylacetoneA mixture of benzoylacetone (0.0087 mole; 1.38 gm), 4-chlorobenzaldehyde (0.0071mole; 1 gm) and thiourea (0.010 mole; 0.80 gm) in ethanol (10 ml) were reacted as perprocedure for the compound (VIIi) to get of [4-(4-chlorophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl](phenyl) methanone (VIIxx).M.P. : 244-245 o C; Yield 81%.Mol. Formula : C 18 H 15 ClN 2 OS; Mol. Wt. 342.84IR(KBr) cm -1 : 3280(γ NH ), 2935(γ CH ), 1588, 1550(γ CH ).1 H NMR(DMSO-d 6 )δppm : 1.76 (s, 3H, CH 3 ), 5.46 (d, 1H, H at 4, J = 3.36), 7.21-7.59(m, 9H, Ar-H), 9.29 (s, 1H, NH at 1), 9.98 (s, 1H, NH at 3).13 C NMR(DMSO-d 6 )δppm : 17.81, 54.98, 76.87, 77.19, 77.51, 127.42, 127.52, 128.06,131.37, 140.92.MS m/e : 342[M + ], 327, 231, 105.21. Synthesis of [4-(3-bromophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl](phenyl)methanone (VIIxxi) from benzoylacetone.A mixture of benzoylacetone (0.0064 mole; 1.05 gm), 3-bromobenzaldehyde (0.0054mole; 1 gm) and thiourea (0.0081 mole; 0.61 gm) in ethanol (10 ml) were reacted as perprocedure for the compound (VIIi) to get of [4-(3-bromophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl](phenyl) methanone (VIIxxi).M.P. : 198-200 o C; Yield 64%.Mol. Formula : C 18 H 15 BrN 2 OS; Mol. Wt. 387.29IR(KBr) cm -1 : 3282(γ NH ), 3070(γ CH ), 1606, 1575(γ CH ).481