000064318 001__ 64318
000064318 005__ 20200221144322.0
000064318 0247_ $$2doi$$a10.1002/ejic.201600922
000064318 0248_ $$2sideral$$a102707
000064318 037__ $$aART-2016-102707
000064318 041__ $$aeng
000064318 100__ $$aAznarez, Francisco
000064318 245__ $$aIridium(III) Complexes Bearing Chelating Bis-NHC Ligands and Their Application in the Catalytic Reduction of Imines
000064318 260__ $$c2016
000064318 5060_ $$aAccess copy available to the general public$$fUnrestricted
000064318 5203_ $$aThe IrIII complexes 4 and 5 bearing bis-NHC ligands (NHC = N-heterocyclic carbene) composed of one classical NR,NR NHC and one N,NR NHC donor were prepared by the reaction of the azolium/azole compounds 2I and 3Br, respectively, with [{Cp*IrCl(µ-Cl)}2] (Cp*=¿5-C5Me5) in the presence of NaOAc as base. Most likely, the salts 2I and 3Br were first selectively deprotonated at the C2 position of the disubstituted (NR,NR) diazaheterocycle to generate an NHC donor, which then coordinated to the IrIII center. Subsequently, NaOAc promoted C–H bond activation at the pendant imidazole moiety of the intermediate IrIII mono-NHC complexes led to the formation of the six-membered iridacycles 4 and 5, which bear a chelating, doubly C-metalated C(NHC)^C(NHC') bis-NHC ligand. The IrIII complexes 4 and 5 were tested as precatalysts for the reduction of imines with molecular hydrogen. Moderate to good activity was observed at a catalyst loading of 5 mol-% and an H2 pressure of 3 bar in MeOH.
000064318 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000064318 590__ $$a2.444$$b2016
000064318 591__ $$aCHEMISTRY, INORGANIC & NUCLEAR$$b13 / 46 = 0.283$$c2016$$dQ2$$eT1
000064318 592__ $$a0.837$$b2016
000064318 593__ $$aInorganic Chemistry$$c2016$$dQ1
000064318 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000064318 700__ $$0(orcid)0000-0003-3144-5320$$aIglesias, Manuel$$uUniversidad de Zaragoza
000064318 700__ $$aHepp, Alexander
000064318 700__ $$aVeit, Benjamin
000064318 700__ $$0(orcid)0000-0002-8220-6031$$aSanz Miguel, Pablo J.$$uUniversidad de Zaragoza
000064318 700__ $$0(orcid)0000-0001-7154-7239$$aOro, Luis A.$$uUniversidad de Zaragoza
000064318 700__ $$aJin, Guoxin
000064318 700__ $$aHahn, F.Ekkehardt
000064318 7102_ $$12010$$2760$$aUniversidad de Zaragoza$$bDpto. Química Inorgánica$$cÁrea Química Inorgánica
000064318 773__ $$g2016, 28 (2016), 4598-4603$$pEur. j. inorg. chem.$$tEUROPEAN JOURNAL OF INORGANIC CHEMISTRY$$x1434-1948
000064318 8564_ $$s914264$$uhttps://zaguan.unizar.es/record/64318/files/texto_completo.pdf$$yPostprint
000064318 8564_ $$s114275$$uhttps://zaguan.unizar.es/record/64318/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000064318 909CO $$ooai:zaguan.unizar.es:64318$$particulos$$pdriver
000064318 951__ $$a2020-02-21-13:41:57
000064318 980__ $$aARTICLE