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Part-IIIExperimentalIR(KBr) cm -1 : 3405(γ NH ), 3099(γ CH ), 1706(γ CO ).11. Synthesis of 4-(5-benzoyl-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidin-4-yl)-benzonitrile (VIIxi) from benzoylacetoneA mixture of benzoylacetone (0.0091 mole; 1.48 gm), 4-cynobenzaldehyde (0.0076 mole;1 gm) and urea (0.011 mole; 0.68 gm) in ethanol (10 ml) were reacted as per procedurefor the compound (VIIi) to get 4-(5-benzoyl-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidin-4-yl)benzonitrile (VIIxi).M.P. : 192-194 o C; Yield 59%.Mol. Formula : C 19 H 15 N 3 O 2 ; Mol. Wt.: 317.34IR(KBr) cm -1 : 3296(γ NH ), 2232(γ CN ), 1677(γ CONH ).1 H NMR(DMSO-d 6 )δppm : 1.70 (s, 3H, CH 3 ), 5.50 (d, 1H, H at 4, J = 3.24), 7.71 (br.,1H, NH at 1), 7.37-7.63 (m, 9H, Ar-H), 9.16 (s, 1H, NH at 3).12. Synthesis of 5-benzoyl-6-methyl-4-(3-nitrophenyl)-3,4-dihydropyrimidin-2(1H)-one from benzoylacetone (VIIxii)A mixture of benzoylacetone (0.0079 mole; 1.28 gm), 3-nitrobenzaldehyde (0.0066 mole;1 gm) and urea (0.009 mole; 0.59 gm) in ethanol (10 ml) were reacted to as per procedurefor the compound (VIIi) to get 5-benzoyl-6-methyl-4-(3-nitrophenyl)-3,4-dihydropyrimidin-2(1H)-one (VIIxii).M.P. : 240-242 o C; Yield 68%.Mol. Formula : C 18 H 15 N 3 O 4 ; Mol. Wt. 337.33IR(KBr) cm -1 : 3229(γ NH ), 1710(γ CO ), 1685(γ CONH ).13. Syntheis of 5-benzoyl-4-(3,5-dibromo-4-hydroxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one(VIIxiii) from benzoylacetoneA mixture of benzyolacetone (0.0043 mole; 0.69 gm), 3,5-dibromo-4-hydroxybenzaldehyde(0.0035 mole; 1 gm) and urea (0.0052 mole; 0.315 gm) in ethanol (10 ml)were reacted as per procedure for the compound (VIIi) to get of 5-benzoyl-6-methyl-4-(3,5-dibromo-4-hydroxyphenyl)-3,4-dihydropyrimidin-2(1H)-one (VIIxiii).478