6533b7dafe1ef96bd126ecf1

RESEARCH PRODUCT

Thiophene based imino-pyridyl palladium(II) complexes : Synthesis, molecular structures and Heck coupling reactions

William M. MotswainyanaSamir M. El-medaniMduduzi P. RadebeBernard Omondi OwagaMatti HaukkaEbbe NordlanderFatma M. ElantabliFatma M. ElantabliErik EkengardMartin O. Onani

subject

Steric effectssynthesisStereochemistryIminechemistry.chemical_element010402 general chemistry01 natural sciencesBiochemistryMedicinal chemistryCatalysismolecular structuresInorganic Chemistrychemistry.chemical_compoundHeck reactionMaterials ChemistryThiophenePhysical and Theoretical Chemistryta116heck reactionsSchiff base010405 organic chemistryOrganic ChemistryCondensation reactionpalladium0104 chemical sciencesimino-pyridylchemistryPalladium

description

Abstract The new compounds (5-methyl-2-thiophene-2-pyridyl(R))imine [R = methyl (L1); R = ethyl (L2)] and (5-bromo-2-thiophene-2-pyridyl(R)imine [R = methyl (L3); R = ethyl (L4)] were successfully synthesized via Schiff base condensation reaction and obtained in good yields. These potential ligands were reacted with [PdCl2(COD)] and [PdClMe(COD)] to give the corresponding complexes [PdCl2(L)] (L = L1-L4; 1–4) and [PdClMe(L)] (L = L1-L4; 5–8). All compounds were characterized by IR, 1H and 13C NMR spectroscopy, elemental analysis and mass spectrometry. The molecular structures of 1, 2, 6 and 8 were confirmed by X-ray crystallography. The complexes were evaluated as catalyst precursors for standard Heck coupling reactions and showed significant catalytic activities that could be correlated with steric and electronic influences.

yearjournalcountryeditionlanguage
2017-08-01Journal of Organometallic Chemistry
10.1016/j.jorganchem.2017.04.022https://doi.org/10.1016/j.jorganchem.2017.04.022