Conversion of monodentate benzoylthiourea palladium(II) complex to bidentate coordination mode: Synthesis, crystal structure and catalytic activity in the Suzuki-Miyaura cross-coupling reaction

Palladium complexes containing NNN pincer type ligands and their activities in Suzuki-Miyaura cross coupling reaction

“…In the second step of the synthesis, palladium (II) complexes of these NNN pincer-type ligands were synthesised by the method specified in the synthesis part and their structures were elucidated by 1 H NMR, 13 C NMR, and FT-IR methods. Characterisation data for all prepared compounds are in agreement with the values in the literature [ [27] , [28] , [29] ].…”

Ru(II) and Ru(III) complexes containing N‐acylthiourea ligands: Supramolecular structures and synthons, reduction, and reaction pathway of aromatic nitro compounds

“…The ligands were synthesized according to a previously published method 4,29 . 1 mmol of aryl chloride ( m ‐ or p ‐chlorobenzoyl chloride) dissolved in anhydrous acetone was added to the potassium thiocyanate solution (1.1 mmol) in anhydrous acetone and, then the resulting mixture was stirred under reflux for half an hour.…”

“…The ligands were synthesized according to a previously published method. 4, 29 1 mmol of aryl chloride (m-or pchlorobenzoyl chloride) dissolved in anhydrous acetone was added to the potassium thiocyanate solution (1.1 mmol) in anhydrous acetone and, then the resulting mixture was stirred under reflux for half an hour. After the mixture was cooled to room temperature, a diethylamine solution (1.1 mol) in anhydrous acetone was added dropwise over a period of 15-20 min.…”

“…The R 2 2 8 ð Þ synthons are connected via C46-H46ÁÁÁO2 and C47-H47ÁÁÁCl2 hydrogen bonds, and the bond lengths are 3.211 and 3.123 Å. A robust four-membered synthons (R 4 2 7 ð Þ) form via intramolecular C-HÁÁÁN and intermolecular C-HÁÁÁ Cl hydrogen bonds between the nitrogen (N1) and chlorine (Cl1) atoms on the benzoylthiourea ligand and the aromatic C-H (C8-H8 and C44-H44) atoms, the bond lengths are 2.485 and 3.704 Å for the C-HÁÁÁ N bond, and 2.774 and 3.287 Å for the C-HÁÁÁCl bond, respectively. These synthons lead to the formation of one-dimensional zigzag chains in the supramolecular structure of [RuCl(CO) (PPh 3 ) 2 L 1 ] (Figure 6c).…”

“…The processes of product generation and substrate activation in catalytic reactions can be affected structurally by complexes of functional group-containing ligands, which can also receive or donate protons and alter the electronic configuration of the metal center. [1][2][3][4][5][6][7] This synergistic effect of ligand and metal is an important factor in catalyst design, 2 and these complexes based on 'synergistic' ligands exhibit remarkable catalytic efficiency in a wide variety of chemical transformations. [8][9][10] The benzoylthiourea derivatives have more than one potential atom for coordination with oxygen, nitrogen, and sulfur atoms and thus can act as monodentate, bidentate, or polydentate ligands.…”