We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Pd(II) complexes of N(4)-substituted phenylaminoacetohydrazone and biacetylmonooxime: synthesis, characterization, structures and catalytic behaviour towards Suzuki-Miyaura coupling reactions.
- Authors
Netalkar, Sandeep P.; Netalkar, Priya P.; Nevrekar, Anupama A.; Revankar, Vidyanand K.
- Abstract
The reaction of [PdCl2(CH3CN)2] and N(4)-substituted phenylaminoacetohydrazone ligands (LH) in methanol at room temperature afforded air- andmoisture-stable palladium(II) complexes of two types with general formulae [Pd(LH)Cl] and [Pd2(LH)(L)]Cl. An unusual coordination mode of ligand LH is observed, in which the ligand coordinates through N(4)H nitrogen and without enolization of the carbonyl group of the hydrazone moiety in both mono- and bimetallic complexes. The crystal structure of the complexes reveals that the oxime LH reacts with [PdCl2(CH3CN)2] presumably via the elimination of HCl from hydrazine NH. All the synthesized Pd(II) complexes were evaluated as catalysts in the Suzuki cross-coupling reaction of aryl halides, activated 4-bromoacetophenone and non-activated bromobenzene, with phenylboronic acid in aqueous medium. In both cases, i.e. with activated and non-activated aryl halides, all the complexes show moderate conversion leading to biaryls with yields in the range 50-65%.
- Subjects
PALLADIUM compound synthesis; NITROGEN compound synthesis; CRYSTAL structure; CATALYSIS; SUZUKI reaction; METAL complexes; HYDRAZONES; X-ray diffraction
- Publication
Applied Organometallic Chemistry, 2016, Vol 30, Issue 4, p170
- ISSN
0268-2605
- Publication type
Article
- DOI
10.1002/aoc.3411