Dioxovanadium(V) Complex Incorporating Tridentate ONO Donor Aminobenzohydrazone Ligand: Synthesis, Spectral Characterization and Application as a Homogeneous Lewis Acid Catalyst in the Friedländer Synthesis of Substituted Quinolines. (21st October 2022)

• Record Type: Journal Article
• Authors: Kargar, Hadi; Fallah-Mehrjardi, Mehdi; Munawar, Khurram Shahzad
• Is Part Of: Polycyclic aromatic compounds. Volume 42:Number 9(2022)
• Page Start: 6485
• Page End: 6500
• Publication Date: 2022-10-21
• Subjects: Dioxovanadium(V) complex -- Friedländer reaction -- homogeneous catalysis -- quinoline -- solvent-free conditions -- tridentate Schiff base; Polycyclic aromatic compounds -- Periodicals; 547
• DOI: 10.1080/10406638.2021.1984258
• Languages: English
• ISSNs: 1040-6638

Abstract

Abstract: A dioxovanadium complex has been successfully prepared by the reaction of an ONO-donor Schiff base, derived by condensing aminobenzohydrazide and 3-ethoxysalicylaldehyde, with VO2 (acac)2 . The structures of synthesized products were explored spectroscopically through FT-IR, 1 H & 13 C NMR, and by elemental composition (CHN) through combustion analysis. The catalytic potential of the complex was explored for the synthesis of substituted quinolines by adapting the Friedländer method. In this method, a cyclocondensation reaction of ortho aminoaryl aldehydes or ketones was carried out with another ketone having an alpha methylene group under solvent-free conditions. The main advantages of the present catalytic work are less time required for the completion of the reaction, high percentage yield, and easy work out procedure.