In this study, a new triazole derivatives were synthesized by many cyclization reactions. The
malonichydrazide1 was synthesized by the reaction of ethyl malonate with hydrazine hydrate .
The compound1 was react with CS2 in asolution of alkali ethanol to give the salt2. The triazole3
was obtained from thecyclization of the salt2 with hydrazine hydrate derivative4 was prepared
by the cyclization reaction of compound 3 with p-Bromophenacyl bromide, the compounds 7 and
8 were prepared according to the same procedures of the compound 3 and 4 using methyl
benzoate instead of ethyl malonate. The biological activity of compounds 3,4,7 and 8 were studied
against four types of bacteria two of them were gram negative (E.Coli and K.pneomonia ) and the
others were gram positive (S. aureus and E. faecalis ). One type of fungi was used which was
Candida albicans. The result showed that the mentioned above compounds possess high biological
activity.