Synthesis, characterization and catalytic study of Schiff base copper(I) complexes for the amination of aryl halide

Copper(I) complexes with Schiff base and 1,2-bis(diphenylphosphino)ethane as ligands: Synthesis, structure and catalytic properties for the amination of aryl halide

“…The Schiff base ligand (3-trifluoromethylphenyl)-pyridine-2-ylmethyleneamine (L) was prepared as previously reported [19]. Other reagents included bromobenzene, iodobenzene, aniline, p-bromoaniline, p-anisidine and KOt-Bu.…”

Mixed-ligand complexes of copper(I) with Schiff base and triphenylphosphine: Effective catalysts for the amination of aryl halide

“…The effect of complex catalysts (1-4) on the amination of bromobenzene was investigated and it was found that copper(I) complexes significantly enhance the conversion of bromobenzene into desired amination product in moderate to good yield. The catalytic efficiency was compared with the previously reported [20] similar copper(I) complexes and it has been found that all reactions were smoothly carried out at relatively low temperature and reached the amination yield up to 45-69% (Table 3). No further increase in the yield of the product was observed even when the reaction time was increased for a longer time.…”

“…As a continuation of our research on copper(I) catalyzed amination of aryl halide [20], we report herein synthesis of four mixed ligand 1 H NMR spectral studies and compound 3 also by X-ray crystallography. The catalytic performance of all the copper(I) complexes in the amination of bromobenzene has also been discussed.…”

Synthesis of novel ferrocene containing vic-dioxime ligands and their Ni(II), Cu(II) and Co(II) complexes: Spectral, electrochemical and biological activity studies

“…The other complexes, 2b-4b, behaved similarly (Table 2). Apart from the ferrocene couple at about 0.450 V, the voltammogram displays a reduction at À1.40 V, which is characteristic of nickel(II)/nickel(I) reduction [40]. As seen, 4a displayed an irreversible peak at E pc ¼ -1.23 V. The reduction wave is assigned to the Co(II)/Co(I) process [41,42].…”