{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T07:19:23Z","timestamp":1787901563866,"version":"build-2784847793"},"reference-count":68,"publisher":"Wiley","issue":"16","license":[{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ChemSusChem"],"published-print":{"date-parts":[[2026,8,27]]},"abstract":"\n The pincer acetate complexes\n trans<\/jats:italic>\n \u2010[Ru(\u03b7\n 1<\/jats:sup>\n \u2010OCOCH\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n (PNN)(PPh\n 3<\/jats:sub>\n )] (PNN\u2009=\u2009N\u2010(2\u2010(diphenylphosphaneyl)benzyl)\u20101\u2010(pyridin\u20102\u2010yl)methanamine (PNN\u2019)\n 1,<\/jats:bold>\n 2\u2010(diphenylphosphaneyl)\u2010N\u2010(pyridin\u20102\u2010ylmethyl)ethan\u20101\u2010amine (PNN\n G<\/jats:sup>\n )\n 2<\/jats:bold>\n ) are synthesized from [Ru(\u03b7\n 2<\/jats:sup>\n \u2010OCOCH\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n (PPh\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n ] and the corresponding PNN ligands in acetone. Reaction of [RuH(\u03b7\n 2<\/jats:sup>\n \u2010OCOCH\n 3<\/jats:sub>\n )(PPh\n 3<\/jats:sub>\n )\n 3<\/jats:sub>\n ] with the PNN ligands in\n n<\/jats:italic>\n \u2010heptane gives\n trans<\/jats:italic>\n \u2010[RuH(\u03b7\n 1<\/jats:sup>\n \u2010OCOCH\n 3<\/jats:sub>\n )(PNN)(PPh\n 3<\/jats:sub>\n )] (PNN\u2009=\u2009PNN\u2019\n 3<\/jats:bold>\n , PNN\n G<\/jats:sup>\n 4<\/jats:bold>\n ). Substitution of PPh\n 3<\/jats:sub>\n in\n 1<\/jats:bold>\n with PPh\n 2<\/jats:sub>\n Me gives\n trans<\/jats:italic>\n \u2010[Ru(\u03b7\n 1<\/jats:sup>\n \u2010OAc)\n 2<\/jats:sub>\n (PNN\u2019)(PPh\n 2<\/jats:sub>\n Me)] (\n 5<\/jats:bold>\n ) in toluene, whereas starting from\n 2<\/jats:bold>\n results in\n trans<\/jats:italic>\n \u2010[Ru(\u03b7\n 1<\/jats:sup>\n \u2010OAc)\n 2<\/jats:sub>\n (PNN\n G<\/jats:sup>\n )(PPh\n 2<\/jats:sub>\n Me)] (\n 6<\/jats:bold>\n ) and\n cis<\/jats:italic>\n \u2010[Ru(\u03b7\n 2<\/jats:sup>\n \u2010OAc)(PNN\n G<\/jats:sup>\n )(PPh\n 2<\/jats:sub>\n Me)]OAc (\n 7<\/jats:bold>\n ) (in 1:1 ratio). The monocarbonyl [Ru(\u03b7\n 2<\/jats:sup>\n \u2010OAc)(CO)(PNN\u2019)]OAc (\n 8<\/jats:bold>\n ) and\n cis<\/jats:italic>\n \u2010[Ru(\u03b7\n 1<\/jats:sup>\n \u2010OAc)\n 2<\/jats:sub>\n (CO)(PNN\u2019)] (\n 9<\/jats:bold>\n ) (in 3:1 ratio) are formed from [Ru(\u03b7\n 1<\/jats:sup>\n \u2010OAc)(\u03b7\n 2<\/jats:sup>\n \u2010OAc)(CO)(PPh\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n ] with PNN\u2019, whereas reaction of the latter precursor with 1\u2010(2\u2010(diphenylphosphaneyl)phenyl)\u2010N\u2010(2\u2010(pyridin\u20102\u2010yl)ethyl)methanimine (PNN(C\n 2<\/jats:sub>\n )\n imine<\/jats:sub>\n ) affords\n cis<\/jats:italic>\n \u2010[Ru(\u03b7\n 1<\/jats:sup>\n \u2010OAc)\n 2<\/jats:sub>\n (CO)(PNN(C\n 2<\/jats:sub>\n )\n imine<\/jats:sub>\n )] (\n 10<\/jats:bold>\n ). Acetate complexes\n 1<\/jats:bold>\n \u2010\n 9<\/jats:bold>\n catalyze the homogeneous hydrogenation of methyl decanoate to 1\u2010decanol with NaOMe under mild reaction conditions (T\u2009=\u200940\u2009\u00b0C, H\n 2<\/jats:sub>\n pressure 27.5\u2009bar) and low catalyst loading (S\/C 1000\u2013100\u2009000) in the absence of solvents. Complex\n 2<\/jats:bold>\n displays extremely high catalytic activity for the reduction of fatty acid methyl and ethyl esters at S\/C of 50\u2009000\u2013100\u2009000, with high chemoselectivity and without C\uf8feC bond reduction. In addition,\n 1<\/jats:bold>\n \u2010\n 4<\/jats:bold>\n and\n 8\/9<\/jats:bold>\n are found to catalyze the base\u2010free hydrogenation of aldehydes. NMR studies show that\n 1<\/jats:bold>\n reacts with H\n 2<\/jats:sub>\n (5\u2009bar), affording the monohydride\n 3<\/jats:bold>\n , which, with KO\n \n t<\/jats:italic>\n <\/jats:sup>\n Bu and hydrogen, reduces methyl benzoate to benzyl alcohol.\n <\/jats:p>","DOI":"10.1002\/cssc.70979","type":"journal-article","created":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T14:23:15Z","timestamp":1787322195000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["PNN Acetate Ruthenium(II) Complexes as Active Catalysts for Fatty Ester Hydrogenation"],"prefix":"10.1002","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6588-8037","authenticated-orcid":false,"given":"Maurizio","family":"Ballico","sequence":"first","affiliation":[{"name":"Dipartimento di Scienze AgroAlimentari Ambientali e Animali (DI4A) Universit\u00e0 di Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tasnim","family":"Al\u2010Kassous","sequence":"additional","affiliation":[{"name":"Johnson Matthey Cambridge UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucas","family":"Carreras","sequence":"additional","affiliation":[{"name":"Johnson Matthey Cambridge UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandra","family":"Heidecker","sequence":"additional","affiliation":[{"name":"Catalysis Research Center Technical University of Munich Garching b. M\u00fcnchen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan Barrios","family":"Rivera","sequence":"additional","affiliation":[{"name":"Johnson Matthey Cambridge UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sara","family":"Roudani","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze AgroAlimentari Ambientali e Animali (DI4A) Universit\u00e0 di Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Walter","family":"Baratta","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze AgroAlimentari Ambientali e Animali (DI4A) Universit\u00e0 di Udine Udine Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,21]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2004.04.007"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/1521\u20103773(20010105)40:13.0.CO;2\u20105"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/ar9502341"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.organomet.2c00068"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/tcr.202500129"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/D5SC00454C"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/aoc.70384"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.5c03183"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.accounts.4c00401"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3DT02887A"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.inorgchem.2c04416"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.1c00412"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1039\/C7CS00693D"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/adsc.201400777"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr5002782"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/ceat.200800035"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/jctb.5039"},{"key":"e_1_2_8_19_1","volume-title":"Reductions by the Alumino\u2010 and Borohydrides in Organic Synthesis","author":"Seyden\u2010Penne J.","year":"1997"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.2c00550"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cattod.2016.03.043"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11746\u2010016\u20102902\u2010x"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5CS00038F"},{"key":"e_1_2_8_24_1","volume-title":"The Handbook of Homogeneous Hydrogenation","author":"de Vries J. 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