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Geçifl metal katalizörlerinin transfer hidrojenasyon reaksiyonuyla organik substratlara hidrojen katılmasıveya çıkarılması önemli bir sentetik araçtır. Bu amaçla, N3,N3'-di-2-hidroksibenziliden-[2,2']bipiridinil3,3'-diamin bilefliğinden elde edilen bir P-O ligandı olan N3,N3'-di-2- difenilfosfino benziliden-[2,2']bipiridinil3,3'-diaminin bir dizi metal kompleksi sentezlendi. N3,N3'-di-2- difenilfosfino benziliden-[2,2']bipiridinil3,3'-diaminin [Ru η-benzen µ-Cl Cl] yada [Ru η-p-simen µ-Cl Cl]2 ile reaksiyonu köprülü ve ikiçekirdekli [CH16N4{OPPh2-Ru η6-benzen Cl2}2] 1 ve [Ckomplekslerini vermektedir. Ru II -bisfosfinit kompleksleri ayrıca basit birçok alkil ve aril alkil ketonuntransfer hidrojenasyonunda katalizör olarak kullanıldı ve iyi düzeyde % 99'a kadar dönüflümler eldeedildi, The ability of transition metal catalysts to add or remove hydrogen from organic substrates by transferhydrogenation process is a valuable synthetic tool. For this aim, a series of metal complexes with a P-Oligand, N3,N3'-di-2- diphenylphosphino benzylidene-[2,2']bipyridinyl-3,3'-diamine derived from N3,N3'di-2-hydroxybenzylidene-[2,2']bipyridinyl-3,3'-diamine were synthesized. Reaction of N3,N3'-di-2 diphenylphosphino benzylidene-[2,2']bipyridinyl-3,3'-diamine with [Ru η6-benzene µ-Cl Cl]2 or [Ru η6p-cymene µ-Cl Cl]2 gave bridged dinuclear complexes [C24H16N4{OPPh2-Ru η6-benzene Cl2}2] 1 and[C24H16N4{OPPh2-Ru η6-p-cymene Cl}2] 2, respectively. Ru II -bisphosphinite complexes have also beenused as catalysts for the transfer hydrogenation of a variety of simple alkyl and aryl alkyl ketones and goodconversions up to 99 % were obtained

Hydrogen transfer reduction processes are attracting increasing interest from synthetic chemists in viewof their operational simplicity. For this aim, a series of Ru II complexes with the NPP and NHP ligandswere synthesized starting from the complex [Ru η6-p-simen µ-Cl Cl]2. The complexes were fullycharacterized by analytical and spectroscopic methods. Complexes 1-4 catalyze the transfer hydrogenationof a variety of simple alkyl and aryl alkyl ketones to secondary alcohols in the presence of iso-PrOH as thehydrogen source. Notably 3 acts as an excellent catalyst giving the corresponding alcohols in excellentconversions up to 99% TOF:198 h-1, Hidrojen transfer indirgenme reaksiyonu, ifllem kolaylığı avantajından dolayı sentez alanında çalıflankimyacıların ilgisini çekmektedir. Bu bağlamda, [Ru η-p-simen µ-Cl Cl]2 kompleksinden yola çıkarakNPP ve NHP ligandlarının bir dizi Ru II kompleksi sentezlendi ve bu kompleksler analitik ve spektroskopikmetotlarla tam olarak karakterize edildi. 1 - 4 kompleksleri hidrojen kaynağı olarak izopropil alkol varlığındabirçok alkil ve aril alkil ketonların sekonder alkollere transfer hidrojenasyonunu katalizlemektedir. Özellikle3 nolu kompleks mükemmel bir katalizör olarak davranmakta ve ilgili alkolleri % 99 a varan dönüflümlerlesağlamaktadır TOF:198 h-1

Reaction of (±)-1-(2-furyl) ethanol with an equivalent Ph2PCl in the presence of Et3N proceeds in dry toluene under an argon atmosphere to give 1-(furan-2-yl)ethyl diphenylphosphinite (1) in good yield. Mononuclear complexes [dichloro(η6-p-cymene)(1-furan-2-ylethyl diphenylphosphinite)ruthenium(II)] (2), [dichloro(η6-benzene)(1-furan-2-ylethyl diphenylphosphinite)ruthenium(II)] (3), [chloro(η4-1,5-cyclooctadiene)(1-furan-2-ylethyl diphenylphosphinite)rhodium(I)] (4) and [dichloro(η5-pentamethylcyclopentadienyl)(1-furan-2-ylethyl diphenylphosphinite)iridium(III)] (5) were synthesized and characterized by microanalysis, infrared, MS, and NMR spectroscopies. The complexes are employed as catalysts in transfer hydrogenation of aromatic ketones. The complexes catalyzed reduction of a variety of aromatic ketone substrates bearing electron-withdrawing or donating substituents with very high conversion rates (up to 99%); 5 was the most efficient catalyst for the transfer hydrogenation of ketones.