262276-74-4

Upstream product

• 118-93-4 o-hydroxyacetophenone 
• 25446-58-6 1-(2-amino-phenylazo)-naphthalen-2-ol 
• 708-06-5 2-hydroxynaphthalene-1-carbaldehyde 
• 262276-71-1 N-(2-hydroxyacetophenone)-1-amino-2-phenyleneimine 

Relevant academic research and scientific papers

Epoxidation of alkenes by an oxidovanadium(IV) tetradentate Schiff base complex as an efficient catalyst with tert-butyl hydroperoxide

A new asymmetrical tetradentate N2O2Schiff base ligand was synthesized from 2-hydroxyacetophenon, 2-hydroxynaphthaldehyde and 1,2 phenylenediimine. The new oxidovanadium(IV) Schiff base complex, VIVOL (L?=?N-2-hydroxyacetophenon-N′-2-hydroxynaphthaldehyde-1,2 phenylenediimine), was prepared by reaction of Schiff base ligand with vanadyl acetylacetonate. The Schiff base ligand (L) and the oxidovanadium(IV) complex were characterized by spectroscopic methods. The crystal structure of the complex was determined by the single crystal X-ray analysis. The complex crystallized in the orthorhombic system, having one V4+ion coordinating in an approximately square pyramidal N2O3geometry by two azomethine N atoms and phenolic oxygens from Schiff base ligand in a square plane and one oxygen atom in an apical position. Electrochemical properties of the complex were examined by means of cyclic voltammetry. The catalytic activity of the oxidovanadium(IV) Schiff base complex was tested in the epoxidation of cyclooctene.

Synthesis and characterization of non-symmetric tetradentate complexes of Zn(II), Co(II), and Cu(II)

The non-symmetrical tetradentate Schiff-base H2L was obtained using the half-unit N-(1-hydroxy-2- acetophenone)-1-amino-2-phenyleneimine (HL) with 2-hydroxyl-1-naphthaldehyde. ZnL, CoL, and CuL complexes were prepared and characterized by 1H-NMR, IR, electronic, and atomic absorption spectra. The single crystal X-ray structure of CuL was determined. Crystal data for CuL are triclinic space group P-1, a = 8.3933 (17) A, b = 11.197 (2) A, c = 13.381 (3) A, α = 95.29 (3) ° , β = 94.37 (3) ° , γ = 95.82 (3) °, and z = 2. TUeBITAK.

Oxotitanium(IV) complexes of some bis-unsymmetric Schiff bases: Synthesis, structural elucidation and biomedical applications

A number of oxotitanium(IV) complexes of the type TiOL with bis-unsymmetric dibasic tetradentate Schiff base (LH2) containing ONNO donor atoms have been synthesized. Mono-Schiff base (OPD-HNP) was prepared by the condensation of 1:3 molar ratio of 2-hydroxy-1-naphthaldehyde (HNP) with o-phenylenediamine (OPD). Dibasic unsymmetric tetradentate diamine Schiff bases were prepared by the reaction of OPD-HNP with 2-hydroxyacetophenone, 2-hydroxypropeophenone, benzoylacetone, acetylacetone and ethylacetoacetate. Further, titanylacetylacetonate was reacted with these ligands to obtain their metal complexes. On the basis of analytical and physiochemical data, the formation of complexes as TiOL was suggested having square pyramidal geometry. Quantum mechanical approach also confirmed this geometry. The assessment of the synthesized ligands and their complexes showed that some behave as good inhibitors of mycelial growth against selected phytopathogic fungi but weak inhibitors against some selected bacteria. A few of them also showed antioxidant properties.