简介：Astrategyforthesynthesisofpolymer-protectivebimetallicsolsisproposedwhichhastheadvantageofthestrongprotectiveeffectofthepolymeragentononeofthecompositestostabilizethebimetalliccolloidalparticles.Thisstrategyiscertifiedtobeusefultothepredicationoftheformationofstablebimetalliccolloidsprotectedbypolymerandtothecontroloftheparticlesizetoacertainextent.AseriesofnewPVP-protectivebimetalliccolloidaldispersionscontainingnoblemetalelement(Pt,Rh,Pd),lighttransitionmetalelement(Co,Fe),andboronareobtainedfromthecorrespondingsaltsbythemethodsofreductionbystageandcoreduction,usingtheNaBH4asreductant.TheTEM,XRDandEPMAmeasurementsindicatetheformationofbimetalliccolloids.AninterestingkindofcoilaggregationisobservedinthesystemsofPVP-Pt-CoandPVP-Rh-Copreparedbythemethodofreductionbystage.

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简介：Theimportantintermediateforsynthesesofvariousanti-HIVnucleosideanalogues,methyl2,3-dideoxy-3-fluoro-6-O-(p-methylbenzoyl)-a-D-ribofuranoside,wassynthesizedstartingfrom2-deoxy-D-ribosein5stepswithanoverallyieldof24%.Thisstrategycanbealsousedforsynthesizingotheranalogueswithvarioussubstitutionsat3-Cposition.

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简介：DirectC—HfunctionalizationofquinolineN-oxideswitharylboronicacidsisachievedusingKMnO_4asthesoleandefficientoxidativesystem.Thismethodprovidesanefficientprotocoltoconstructregioselectively2-arylquinolineN-oxidesviaradicalcross-couplingreactioninmoderatedtogoodyieldsundermildconditions.