6076-01-3Relevant academic research and scientific papers
Propargyl-functionalized single arm allied Anthracene based Schiff bases: Crystal structure, solvatochromism and selective recognition of Fe3+ ion
Singh, Gurjaspreet,Pawan,Singh, Akshpreet,Shilpy,Diksha,Suman,Sharma, Geetika,Sahoo, Subash Chandra,Kaur, Amarjit
, (2020/11/24)
An organic moiety exhibit specific behavior in electronic absorption spectra while accommodating various solvents or metal ions and that specificity depends on particular guest solvent molecules or metal ions. Herein, we report about the photophysical pro
Half-sandwich Ruthenium(II) Schiff base complexes: Synthesis, characterization and effective catalysts for one-pot conversion of aldehydes to amides
Premkumar, Muniyappan,Vijayan, Paranthaman,Venkatachalam, Galmari
, (2019/10/08)
Five new Schiff base ligands and conformationally rigid half-sandwich organo ruthenium(II) Schiff base complexes (1–5) with the general formula [Ru(η6?p?cymene)(Cl)(L1-5)] (where, L = mono anionic Schiff base ligands) have been synthesized from the reaction of [{(η6?p?cymene)RuCl}2(μ?Cl)2] with a bidentate Schiff bases ligands. These ruthenium(II) Schiff base complexes were fully characterized by elemental analysis, FT?IR, UV–Vis, 1H & 13C NMR and mass spectroscopy studies. In chloroform solution, all the metal complexes exhibit characteristic metal to ligand charge transfer bands (MLCT) and emission bands in the visible region. The crystal structure of the complexes [Ru(η6?p?cymene)(Cl)(L1)] (1) and [Ru(η6?p?cymene)(Cl)(L3)] (3) were determined by single crystal X?ray crystallography. The complexes exhibited good catalytic activity for aldehydes to amides by one-pot conversion process in the presence of NaHCO3/NH2OH·HCl.
Photochemical and Thermal Reactions of Aromatic Schiff Bases
Tauer, Erich,Grellmann, Karl H.
, p. 4252 - 4258 (2007/10/02)
The photochemical and thermal reactions of aromatic Schiff bases (SB) prepared from o-aminophenol and aldehydes and from o-aminophenol and ketones are compared.All SB's are converted by light into the corresponding benzoxazolines.For the SB's derived from aldehydes, benzoxazoline formation is a prerequisite to convert them by a second photon into benzoxazoles.In some cases oxygen is not required for this second reaction step.SB's derived from ketones are converted into benzoxazoles by the absorption of just one photon, but only in the presence of oxygen and only if the aliphatic residue R1 of the N=C(R1R2) bridge contains at least two carbon atoms.A radical mechanism is proposed for this reaction.Benzoxazine formation is observed in some cases as a thermal side reaction.The photochemical reactions of the latter were also investigated.
