1-(4- Chloro -1-hydroxynaphthalen-2-yl)-ethanone was prepared by refluxing 4-chloronaphthalen-1-ol with glacial acetic acid in presence of fused ZnCl2. From this synthesized compound we prepared 1-(4- Chloro -1- hydroxynaphthalen-2-yl)-3-(4-hydroxy phenyl)-prop-2-en-1-one from condensing 1-(4- Chloro -1-hydroxynaphthalen-2- yl)-ethenone, The final product 6-(5-chloro-8-hydroxynapthalene-2-yl)-4(4-hydroxyphenyl)-4-5-dihydroxypyrimidin-2(1h)-one, by condensation in presence of urea and concentrated HCl in DMF. The compounds thus synthesized have been characterized by physical and spectral data. This titled synthesized compound was screened for antimicrobial study and are found to possess excellent antimicrobial activities due to presence of chlorine as a substituent on main nucleus.