Iron- and copper-based bifunctional catalysts for the base- and solvent-free C–N coupling of amines and aryl/benzyl chlorides under aerobic conditions

Abstract

Iron chalcogenide cluster Fe3Se2(CO)9 and Cu(OAc)2 were found to be an outstanding bimetallic catalyst for C–N coupling reaction of amines and arylchlorides. The reaction proceeds under base and solvent free...

Electrocatalytic Oxygen Reduction by Cu Complexes of Tripeptide Derivatives of Glutathione

“…As mentioned above, the amplitudes of the 1620 cm –1 transitions signify the presence of a much larger size and a more ordered β-strand stack . The ability of the metals to trigger aggregation formation is not uncommon, especially for Cu 2+ ions. − Using a similar aggregation analysis as above, the Cu 2+ –peptide complexes were assessed for the total population aggregation. In QCG, ECG, and NCG Cu 2+ –peptide complexes, the in-phase β-sheet (frequency distributions at ∼1620 cm –1 ) increases as the pH increases, with the exception of ECG.…”

Functionalized imidazolium salt: an efficient catalyst for Buchwald–Hartwig type C–N cross-coupling of (hetero)aryl chlorides/bromides with amines under solvent-, inert gas-, and base-free ambience

“…Each component of laboratory glassware was oven dried and then used for carrying out the general experimental procedures. 1 H and 13 C NMR spectroscopic data were collected on a Bruker FT 400 MHz spectrophotometer operating at 400 MHz for the 1 H and 100 MHz for 13 C experiments. Some spectra were also analyzed on a JEOL ECS-400 spectrometer which was functioning at 400 MHz for 1 H proton NMR and 100 MHz for 13 C proton This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2022 NMR and CDCl 3 and DMSO-d 6 were utilized as solvents for preparing the samples.…”

“…1 H and 13 C NMR spectroscopic data were collected on a Bruker FT 400 MHz spectrophotometer operating at 400 MHz for the 1 H and 100 MHz for 13 C experiments. Some spectra were also analyzed on a JEOL ECS-400 spectrometer which was functioning at 400 MHz for 1 H proton NMR and 100 MHz for 13 C proton This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2022 NMR and CDCl 3 and DMSO-d 6 were utilized as solvents for preparing the samples. Both tetramethylsilane (TMS) (0.00 ppm) and CDCl 3 were applied as internal standards while recording the 1 H proton NMR (d 7.246 ppm) and 13 C (d 77.0 ppm) proton NMR.…”

“…Some spectra were also analyzed on a JEOL ECS-400 spectrometer which was functioning at 400 MHz for 1 H proton NMR and 100 MHz for 13 C proton This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2022 NMR and CDCl 3 and DMSO-d 6 were utilized as solvents for preparing the samples. Both tetramethylsilane (TMS) (0.00 ppm) and CDCl 3 were applied as internal standards while recording the 1 H proton NMR (d 7.246 ppm) and 13 C (d 77.0 ppm) proton NMR. Patterns of the chemical shifts in proton NMR are described in parts per million (ppm).…”

“…8 Chan, Evans and Lam also contributed significantly to C–N coupling using Cu(OAc) 2 as a catalyst with an amine base. 9–11 A variety of transition metals, like Pd, 2 Fe, 12,13 Ag, 14 Ni, 15 Au, 16 Rh, 17 and La 18 have been employed as salts or complexes in the production of C–N bonds. In accordance with the literature, C–N coupling necessitates a strong base.…”