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1、ARTICLEDOI:10.1002/zaac.201300153SynthesisandStructuresofTwoDinuclearTransitionMetalComplexesandTheirCatalyticApplicationsinHydrogenationofKetonesJianhuaHe,[a,b]MulanZeng,[a]HaiyanCheng,[a]ZiluChen,*[a]andFupeiLiang[a]Keywords:Crystalstructure;Schiff
2、bases;Dinuclearcomplex;Catalytichydrogenation;KetonesAbstract.Thecomplexes[Ni2(L)2]2·H2O(1)and[Cu2(L)2(H2O)]·effectsinhydrogenationofacetophenone,whichhasadependenceon2CH3OH(2)werepreparedbyreactionofthechiralSchiffbaseligandthetemperatureandbaseused
3、inthesereactions.However,noapparentN-[(1R,2S)-2-hydroxy-1,2-diphenyl]-acetylacetonimine(H2L)withcatalyticeffectswerefoundforthetwocomplexesinhydrogenationNiIIandCuIIions,respectively,aimingtodevelopeconomicallyandof4-nitroacetophenoneand4-methylaceto
4、phenone.Althoughthecata-environmentally-friendlycatalystsforthehydrogenationofketones.lyticconversioninthesehydrogenationreactionsislow,theydorepre-Theyhaveadinuclearskeletonwithaxialvacantsites.Thecatalyticsentakindofcheapandenvironmentally-friendly
5、hydrogenationcata-effectsofthetwocomplexesforhydrogenationofketonesweretestedlyst.usingdihydrogengasashydrogensource.TheypresentsomecatalyticIntroductiondihydrogengasashydrogensource.However,theirconver-sionswerenothighasexpected.Thus,wemodifiedtheph
6、os-Hydrogenationofcarbonyl-containingorganiccompoundsphorus-freeligandandreporthereinthechiralSchiffbaseli-usingtransitionmetalcomplexesascatalystsplaysanimpor-gandN-[(1R,2S)-2-hydroxy-1,2-diphenyl]-acetylacetoniminetantroleinorganicsynthesis.[1–5]Ac
7、cordingtoliteratures,(H2L),whichwassynthesizedbyreactionofacetylacetonemostofthedevelopedcatalystsarecomplexesofpreciouswith(1R,2S)-2-hydroxyl-1,2-diphenylamine,anditscomplexesmetalssuchasRh,Ir,andRufortheirhighcatalyticeffi-[6–12][Ni2(L)2]2·H2O(1)an
8、d[Cu2(L)2(H2O)]·2CH3OH(2).Theciency.However,theirhighcostbringsalotoflimitationcatalyticeffectsofthetwocomplexesinhydrogenationoffortheirwideapplication.Severalstudiesrevealedthatnon-acetophenonewereinvestigated.preciousmetalcomplexescanalsoactascata