title: Design, synthesis, characterization of novel ruthenium(II) catalysts: highly efficient and selective hydrogenation of cinnamaldehyde to (E)-3-phenylprop-2-en-1-ol.
abstract: In this contribution, two novel supported and non-supported ruthenium(II) complexes of type [RuCl2(dppme)(NN)] where [dppme is H2C=C(CH2PPh2)2 and NN is N1-(3-(trimethoxysilyl)propyl)ethane-1,2-diamine] were prepared. The NN co-ligand caused release of one of the dppme ligands from [RuCl2(dppme)2] precursor to yield complex 1. The process of substitution of dppme by NN was monitored by 31P{1H}-NMR. Taking advantage of the presence of trimethoxysilane group in the backbone of complex 1, polysiloxane xerogel counterpart, X1, was prepared via sol-gel immobilization using tetraethoxysilane as cross-linker. Both complexes 1 and X1 have been characterized via elemental analysis, CV and a number of spectroscopic techniques including FT-IR, 1H-, 13C-, and 31P-NMR, and mass spectrometry. Importantly, carbonyl selective hydrogenation was successfully accomplished under mild conditions using complex 1 as a homogenous catalyst and X1 as a heterogeneous catalyst, respectively.
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia. hdarwish75@yahoo.com.
authors.forename: Hany W
authors.initials: HW
authors.lastname: Darwish
authors.affiliation: Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. ambarakat@ksu.edu.sa.
authors.forename: Assem
authors.initials: A
authors.lastname: Barakat
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia. anafady@ksu.edu.sa.
authors.forename: Ayman
authors.initials: A
authors.lastname: Nafady
authors.affiliation: Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus 0092, Palestine. suleimanshtaya@najah.edu.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Suleiman
authors.affiliation: Department of Chemistry, Hashemite University, Zarqa 13115, Jordan. manoaimi@hu.edu.jo.
authors.forename: Mousa
authors.initials: M
authors.lastname: Al-Noaimi
authors.affiliation: LCAE-URAC18, Faculty of Science, University Mohammed Premier, Oujda-60000, Morocco. hammoutib@gmail.com.
authors.forename: Belkheir
authors.initials: B
authors.lastname: Hammouti
authors.affiliation: LCAE, Chemistry Department, Faculty of Sciences, University Mohammed Premier, Oujda-60000, Morocco. radi_smaail@yahoo.fr.
authors.forename: Smaail
authors.initials: S
authors.lastname: Radi
authors.affiliation: Lab of Chemical Material, FSO, University Mohammed Premier, Oujda-60000, Morocco. taibi.ben.hadda@gmail.com.
authors.forename: Taibi Ben
authors.initials: TB
authors.lastname: Hadda
authors.affiliation: Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus 0092, Palestine. obaid@najah.edu.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Abu-Obaid
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia. mmubarak@ju.edu.jo.
authors.forename: Mohammad S
authors.initials: MS
authors.lastname: Mubarak
authors.affiliation: Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus 0092, Palestine. warad@najah.edu.
authors.forename: Ismail
authors.initials: I
authors.lastname: Warad
mesh_terms: D000171:Acrolein / Q000031:analogs & derivatives* / Q000737:chemistry; D002384:Catalysis; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D003959:Diamines / Q000138:chemical synthesis / Q000737:chemistry; D006865:Hydrogenation; D009682:Magnetic Resonance Spectroscopy; D020005:Propanols / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D056831:Coordination Complexes; D003959:Diamines; D020005:Propanols; D000171:Acrolein; D012428:Ruthenium; C012843:cinnamaldehyde; C020722:cinnamyl alcohol