SYNTHESIS OF NOVEL BIS(PHOSPHINO)AMINE-RUII(ACAC)2 COMPLEXES, AND INVESTIGATION OF CATALYTIC ACTIVITY IN TRANSFER HYDROGENATION

In this study, reactions of (PPh2)2NCH2CH2N(PPh2)2 (L1) and {(PPh2)2NCH2CH2}3N (L2) with [RuII(acac)2(CH3CN)2] led to the production new dinuclear complex [Ru(acac)2]2(L1) (1) trinuclear [Ru(acac)2]3(L2) (2). Complex 1 2 are excellent candidates for role catalyst precursors in transfer hydrogenation (TH) acetophenone its derivatives. Compared (1), (2) is an exceptional catalyst, producing corresponding alcohols 98–99% yields 20 minutes at 80 oC (TOF≤300 h-1) TH process. A comparison catalytic properties complexes also briefly discussed. structures have been characterized by combining nuclear magnetic resonance (NMR), Fourier transform infrared (FT-IR), elemental analysis.