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|Title:||Mn(III)-catalyzed synthesis of pyrroles from vinyl azides and B-keto acids.||Authors:||Ng, Eileen Pei Jian.||Keywords:||DRNTU::Science::Chemistry::Organic chemistry::Heterocyclic compounds||Issue Date:||2010||Abstract:||β-keto acids and vinyl azides are found to be promising precursors for the synthesis of pyrroles with Mn(acac)3 as a catalyst. One electron oxidation of β-keto acids by Mn(acac)3 induces decarboxylation to afford α-keto radicals, which then add on to vinyl azides, leading to the formation of iminyl radicals with elimination of dinitrogen. Intramolecular cyclization of the iminyl radical with a carbonyl moiety gives pyrrole after dehydration with regeneration of the Mn(III) complex.||URI:||http://hdl.handle.net/10356/40466||Fulltext Permission:||restricted||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Student Reports (FYP/IA/PA/PI)|
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