Details

Autor(en) / Beteiligte

• Arumugam, Vignesh
• Kaminsky, Werner
• Bhuvanesh, Nattamai S. P
• Nallasamy, Dharmaraj

Titel

Palladium() complexes containing ONO tridentate hydrazone for Suzuki-Miyaura coupling of aryl chlorides in aqueous-organic media

Ist Teil von

• RSC advances, 2015-01, Vol.5 (73), p.59428-59436

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Facile synthesis of three new palladium( ii ) complexes bearing heterocyclic hydrazone ligands are presented along with their structural characterization using IR, 1 H and 13 C NMR spectra. Molecular structures of the complexes determined by single-crystal XRD revealed a distorted square-planar geometry around the metal ion to which the hydrazone was attached in a tridentate fashion. Catalytic activity of these complexes tested towards the SuzukiMiyaura cross coupling reaction of substituted aryl boronic acids with aryl chlorides in a water-toluene system (90: 10%) without using any promoting additives or phase transfer agents, proved that they are highly active with 0.01 mol% loading under optimized conditions to afford 99% yield of the coupled product. Effects of temperature, solvent and base on the cross-coupling reaction were carried out as well. These complexes showed significant catalytic activity up to five cycles. Robust and recyclable pincer type palladium( ii ) complexes for Suzuki-Miyaura coupling of challenging aryl chlorides in aqueous-organic media.