الفهرس 
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Abstract
SUMMARY
chalcone 1 was synthesized by a base-catalyzed Claisen-Schmidt
reaction between para dimethyl amino benzaldehyde and para
aminoacetophenone in 70% yield (Scheme 1).
The pyrimidine derivative 2 was obtained by refluxing 1 with urea
in alkaline medium in ethanol in 68% yield (Scheme 2).
The dimethyl pyrimidine derivative 3 was obtained by refluxing 1
with dimethyl urea in alkaline medium in ethanol in 72% yield (Scheme