title: Synthesis of imine and reduced imine compounds containing aromatic sulfonamide: use as catalyst for in situ generation of ruthenium catalysts in transfer hydrogenation of acetophenone derivatives.
abstract: Three imine and three reduced imine ligands containing aromatic sulfonamide (2-7) were isolated by a simple method and characterized by FT-IR, NMR, and elemental analysis. Meanwhile, the interaction of 2-7 ligands with [(p-cymene)RuCl2]2 was analyzed in situ by UV-vis spectrophotometer. The in situ generated catalytic system derived from N-(2-(benzylideneamino)phenyl)-2,4,6-trimethyl-benzenesulfonamides and N-(2-(benzylamino)phenyl)-2,4,6-trimethyl-benzenesulfonamides with [(p-cymene)RuCl2]2 was used as a catalyst in the transfer hydrogenation (TH) of p-substituted acetophenone derivatives. The catalytic systems displayed high activities, which increased in the order 7<4<5<6<1<2<3. The best activity for the TH of 4-chloroacetophenone was provided with the [(p-cymene)RuCl2]2/ligand (3) catalytic system (turnover frequency values: 720 h(-1) for 10 min on S/C: 500/1).
authors.affiliation: Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Serkan
authors.initials: S
authors.lastname: Dayan
authors.affiliation: Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Fatma
authors.initials: F
authors.lastname: Arslan
authors.affiliation: Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Nilgün
authors.initials: N
authors.lastname: Kayacı
authors.affiliation: Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey. Electronic address: nozpozan@erciyes.edu.tr.
authors.forename: Nilgun Ozpozan
authors.initials: NO
authors.lastname: Kalaycioglu
mesh_terms: D000098:Acetophenones / Q000737:chemistry*; D002384:Catalysis; D000081007:Cymenes; D006865:Hydrogenation; D007097:Imines / Q000138:chemical synthesis / Q000737:chemistry*; D039821:Monoterpenes / Q000737:chemistry; D010084:Oxidation-Reduction; D012428:Ruthenium / Q000737:chemistry; D013449:Sulfonamides / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000098:Acetophenones; D000081007:Cymenes; D007097:Imines; D039821:Monoterpenes; D013449:Sulfonamides; C007210:4-cymene; D012428:Ruthenium; C038699:acetophenone
keywords: Imine; Reduced imine ligands; Sulfonamide; Transfer hydrogenation