Chemistry - Sciene

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).

          The scheme of this work involves synthesis of new five, six and seven membered heterocyclic rings derived from p-Toluic acid [1].This work is divided into four parts: -Part one: - Include synthesizing phthalazin, pyridazin-dione and oxadiazole derivatives [4], [5], [6] and [7] derived from 4-methyl benzoic hydrazide [3] which was prepared from the reaction of ethyl-4-methyl benzoate [2] with hydrazine hydrate as show in scheme 1.intermolecular cyclization of semicarbazide derivatives [8], [9]  with 4-bromophenancyl bromide respectively