2447-79-2Relevant articles and documents
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)
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.
Acid-promoted palladium(II)-catalyzed ortho-halogenation of primary benzamides: En route to halo-arenes
Jaiswal, Yogesh,Kumar, Amit
, (2019/08/26)
Br?nsted acid-promoted palladium(II)-catalyzed regioselective installation of halogens (Br, Cl, and I) to the aromatic ring of benzamide derivatives has been achieved using primary amides. A wide variety of benzamides were compatible under established conditions to afford the halogenated products without installing any external auxiliary. Mild reaction conditions, use of primary amide as a directing group, external additive-free conditions, and gram-scale reaction are some appealing features of this protocol. Detailed experimental results revealed that Br?nsted acid plays a critical role in this transformation.
Tandem synthesis of aromatic amides from styrenes in water
Sathe, Pratima A.,Karpe, Aniket S.,Parab, Aniket A.,Parade, Babasao S.,Vadagaonkar, Kamlesh S.,Chaskar, Atul C.
supporting information, p. 2820 - 2823 (2018/06/25)
An expedient one-pot synthesis of aromatic amides has been reported from styrenes in the presence of N-bromosuccinimide and iodine by using aqueous ammonia in water. The reaction proceeds through the formation of α-bromoketone as an intermediate in the pr
