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Highly Selective Macrocycle Formations by Metathesis Catalysts Fixated in Nanopores

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dc.contributor.authorJee, Joo-Eun-
dc.contributor.authorCheong, Jian Liang-
dc.contributor.authorLim, Jaehong-
dc.contributor.authorChen, Cheng-
dc.contributor.authorHong, Soon Hyeok-
dc.contributor.authorLee, Su Seong-
dc.creatorHong, Soon Hyeok-
dc.date.accessioned2014-05-02T08:46:33Z-
dc.date.available2014-05-02T08:46:33Z-
dc.date.issued2013-02-
dc.identifier.citationJournal of Organic Chemistry, Vol.78 No.7, pp. 3048-3056-
dc.identifier.issn0022-3263-
dc.identifier.urihttps://hdl.handle.net/10371/91674-
dc.description.abstractRuthenium-based metathesis catalysts immobilized on mesocellular siliceous foam (MCF) bearing large nanopores proved highly efficient and selective for macrocyclic ring-closing metathesis (RCM). Kinetic studies revealed that the homogeneous counterpart exhibited far higher activity that accounted for more oligomerization pathways and resulted in less macrocyclization products. Meanwhile, the immobilized catalysts showed lower conversion rates leading to higher yields of macrocyclic products in a given reaction time, with conversion rates and yields dependent upon pore size, catalyst loading density, and linker length. The macrocycle formations via RCM were accelerated by increasing the pore size and decreasing the catalyst loading density while retaining the comparably high yield. The catalysts immobilized on MCF, of which silica surface is rigid and pores are relatively large, showed high conversion rates and yields compared with an analogue immobilized on TentaGel resins, of which backbone becomes flexible upon swelling in the reaction medium. It is noteworthy that the selectivity for the macrocyclic RCM can be significantly improved by tuning the catalyst initiation rates via immobilization onto the support materials in which well-defined three-dimentional network of large nanopores are deployed.en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.subject복합학en
dc.titleHighly Selective Macrocycle Formations by Metathesis Catalysts Fixated in Nanoporesen
dc.typeArticle-
dc.contributor.AlternativeAuthor지주은-
dc.contributor.AlternativeAuthor임재홍-
dc.contributor.AlternativeAuthor홍순혁-
dc.contributor.AlternativeAuthor이수성-
dc.identifier.doi10.1021/jo302823w-
dc.description.srndOAIID:oai:osos.snu.ac.kr:snu2013-01/102/2011005261/2-
dc.description.srndSEQ:2-
dc.description.srndPERF_CD:SNU2013-01-
dc.description.srndEVAL_ITEM_CD:102-
dc.description.srndUSER_ID:2011005261-
dc.description.srndADJUST_YN:Y-
dc.description.srndEMP_ID:A078745-
dc.description.srndDEPT_CD:3343-
dc.description.srndCITE_RATE:4.564-
dc.description.srndDEPT_NM:화학부-
dc.description.srndSCOPUS_YN:Y-
dc.description.srndCONFIRM:Y-
dc.identifier.srnd2013-01/102/2011005261/2-
Appears in Collections:
College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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