乙酸肉桂酯的合成.ppt

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1、Synthesisofcinnamylacetate（乙酸肉桂酯）bysolid–liquidphasetransfercatalysis:KineticstudywithabatchreactorCatalysisCommunications10(2009)1638–1642ContentsIntroduction1Experimental2Results＆discussion34Conclusions1.IntroductionL-LPTCItinvolvesthereactionofanionicre

2、actantfromaqueousphasewiththereactantinorganicphasebyaphasetransfercatalystS-LTPCItinvolvesthereactionbetweenthesolidnucleophilewiththeotherreactantintheorganicliquidphasePTCphasetransfercatalysis1.IntroductionL-LPTCeliminatestheneedofusingaqueousphasethus

3、eliminatestheseparationproblemsandeasyrecoveryofthecatalystenhancestheproductselectivitybyavoidingthesidereactionslowerselectivityandothersidereactionssynthesisoffineandspecialtychemicalsseparationandpurifyingthefinalproductComparedwithL-LPTCandL-SPTCL-SPT

4、Cthecarboxylicacidsshowslessreactivity‘‘omegaphase”enhancethesolubilizationofthesolidandformationofthecatalyticintermediate1.Introductionwefocusoureffortsonstudyingthekineticsandfactorsaffectingthesynthesisofcinnamylacetate（乙酸肉桂酯）fromcinnamylbromide（肉桂酸溴）a

5、ndsodiumacetate（乙酸钠）byS–LPTC.1.Introduction2.Experimentalsodiumacetate(0.025mol)，cinnamylbromide(0.02mol)，n-dodecaneaddchlorobenzeneto50mLandthetemperaturewasraisedto90°CwithconstantstirringProductaddarequiredamountofphasetransfercatalystwhenthetemperature

6、reached90°CAtpresettimes,thestirrerwasturneofftemporarily,0.5mloforganicsolutionwaspipettedoutanalyzedonagaschromatographusingSE-30Column.3.Results＆discussion7factorstypeofcatalystspeedofagitationreactiontemperaturewateradditionsizeofsodiumacetatecatalystl

7、oadingconcentrationofreactantInordertooptimizethereactionconditions,theesterificationreactionwascarriedoutbyvaryingfactorsasfollow:3.Results＆discussion3.1EffectofagitationspeedTheinterfacialmasstransferresistancebetweenthesolidsurfaceandorganicphaseisnegli

8、giblewhentheagitationspeedisabove600rpm.Inthiscontext,agitationspeedwasfixedat600rpmforallfurtherexperiments.3.Results＆discussion3.2EffectofalkylchainlengthofthecatalystHenceTBABischosenasthephasetransfercata