新型金納米催化劑與合成β-二芳基丙烯酸酯新方法研究.pdf

1、天津大學(xué)博士學(xué)位論文新型金納米催化劑與合成β－－二芳基丙烯酸酯新方法研究姓名：張欣申請學(xué)位級別：博士專業(yè)：化學(xué)；有機(jī)化學(xué)指導(dǎo)教師：王建輝201011ABSTRACTAunanopaniclesStabilizedbypolys夠rcne一∞polymethac拶licacidmicrospheres(PS∞一PMAA)wereprepared鋤dcharacterizedViaXraydifj曬ction(XRD)，鋤d仃ansmiSS

2、ionelec仃0nmicroscope(TEM)TheAunanoparticlessupportedonthemicrospheresshowedhighlyselectiVecatal”icactiVit)，forhomocouplingreactionsofa叫IboronicacidsinaSystemofaD，l_haIidesanda巧lboronicacidsXrayphotoelecnonspectroscopyⅨPS

3、)spectraofthecataIyStshowsla唱eamountsofAu(I)complexesb鋤dt0thesu以ceoftheAunanoparticles，whichcontributestotheselectiVehomocouplingofthea巧lboronicacidsMoreimportantlythissupportedAucomplexisahighlyrecyclablecatalystThesupp

4、ortedAucatalyStc鋤berccycled卸dreusedatleast6timesforaphenylboronicacid陀actant，whereastheparentcomplexshowsVe拶lowcatal如cactiVityforthiscompoundThehighcatal州cactivi秒ofthismaterialisattributedt0：1)thehighsu“Iacetovolumemtiow

5、hichleadstomoreactivesitesbeingexposedt0reactants；2)thestrongsurfacebindingoftheAunanoparticletotheAu(I)complexes，which明hancesboththestabili夠鋤dthecatal”icactivi夠ofthesecomplexesInaddition，condensationreactionbe觚eenSteric

6、allyhinderedketones鋤dethyIacetatew觴Studied，whichisanewmethodfortheSynthesis0fethyl3，3’diphenylac叫l(wèi)ate鋤ditsderivativesLewisacidbasepai卜AlCl3／Et3NwaSfoundt0beemcientforthiskindofrcactionUndertheoptimizedconditions，wecarrie

7、doutthecondensationreactionwithaseriesofsubstratesTheproductsofthereactions、verecharacterizedby1HNMR卸dGCMSComparedwiththereactionsrcportedinliteratures，themethodinthispaperwassimple，facileande幣cient，also，thecatalyst、Vasi

8、nexpensiVeThismethodisnotonlysuitableforlaborato巧rcsearchbutalsosuitableforlarge—scaleindustrialproduction，andithasbeendemonstratedpotentialindustrialvalueKEYWoRDS：Aunanopanicles，Au(I)catalySt，homocouplingreaction，conden