7-Hydroxy-3-methylcoumarin (III) was obtained by Perkin reaction of 2,4-dihydroxybenzaldehyde (I) and propionic anhydride (II) in the presence of sodium propionate in pyridine. Alkylation of N-phenylpiperazine (IV) with 1-bromo-3-chloropropane (V) and NaOH in acetone provided the chloropropyl compond (VI), which was finally condensed with coumarin (III) using NaH in DMF.