简介:AnovelHeckreactioncatalystconsistingofapalladium(Ⅱ)complexofmeso-tetra(phydroxyphenyl)porphyrin(MTP)andcross-linkedchloromethylatedpolystyrenemicrospheres(PMs)wassuccessfullypreparedviacovalentetherbondsbetweenthechloridegroupsinthePMsandthehydroxylgroupsinMTP.Thecatalystwascharacterizedusingscanningelectronmicroscopy,Fourier-transforminfraredspectroscopy,andinductivelycoupledplasmaatomicemissionspectroscopy(ICP-AES).Thispolystyrene-supportedpalladium-complexwasanefficientheterogeneouscatalystforcross-couplingofaryliodideswithethylacrylate.ThereactionofiodobenzeneandethylacrylateunderN2at100℃andacatalystconcentrationof0.1%gaveagaschromatographyproductyieldof99.8%,whichismuchhigherthanthatachievedusingafreepalladium(Ⅱ)complexofMTPasthecatalyst(41.3%).Thecatalystwasrecycleduptosixtimeswithoutsignificantlossofcatalyticactivity.Theseresultssuggestthattheimmobilizedpalladium(Ⅱ)-MTPcatalysthaspotentialapplicationsinsyntheticandindustrialchemistry.