Synthesis of Derivatives of Organoheterotrimetallic dibutyl-[Al(III), Sn(IV), Ti(IV)]- μ -oxoisopropoxide- μ-oxo n-Propoxide with Salicylates

Abstract

Abstract:Tin diacetate and aluminium isopropoxide in equimolar proportion in xylene affords the complex [(OAc)SnOAl(OPr i ) 2 ] which on reaction with Ti(OPr n ) 4 in 1:1 molar ratio yielded a new organoheterotrimetallic-μ-oxoisopropoxide-μ-oxo-n-propoxide [SnO 2 TiAl(OPr i ) 2 (OPr n ) 3 ] with continuous liberation of isopropyl acetate and propyl acetate formed during the course of reaction. The preparation of some important salicylates (methyl salicylate, chloro methyl salicylate, phenyl salicylate, phenyl 2-hydroxy 5-chloro benzoate) derivatives of compound [Bu 2 SnO 2 TiAl (OPr i ) 2 (OPr n ) 3 ] have been carried out in different molar ratios(1:1 and 1:2) in refluxing benzene. The complexes were further characterized by spectral analysis (IR, 1 H, 13 C, 119 Sn, 27 Al NMR and mass spectra).The spectral studies confirmed the proposed framework of the new organoheterotrimettalic complexes and indicated a tetrahedral geometry around the central metal atom.