College of Science

         A new schiff base contaning cyclohexyl moiety and phenyl group i.e.

The new ligands have been prepared in this work, which contain  benzothiazole linked to three different aldehydes throw imine group. these three ligands include:

LI=  2- (Acetlidine ) hydrazine benzothiazole.LII= 2- (O -hedroxy benzylidine) hydrazine benzothiazole. LIII=2-(2,4,6- trimethoxy benzylidine) hydrazine benzothiazole.

Which were reacted with the transition metal iones ( Ni(II) , Co(II) , Cu(II) , Cd(II) ).

          This work involves synthesis of different five, six and seven membered heterocyclic rings starting from 2-hydrazino benzothiazole which was synthesized from the corresponding 2-mercapto benzothiazole on its reaction with hydrazine hydrate. This work is divided into four different parts:

First part: This part involved the synthesis of oxadiazole, oxazoline, triazole, thiadiazole and diazole from compounds [a], [1] and [19] with different organic materials as shown in Schemes (1) and (2).