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Synlett 1992; 1992(3): 219-220
DOI: 10.1055/s-1992-21319
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Fast Synthesis of Heterobicycles Containing a Bridgehead Nitrogen Atom in Dry Media under Microwave Irradiation

Jean-Francois Pilard* , Bruno Klein, Francoise Texier-Boullet, Jack Hamelin
  • *Université de Rennes I, Groupe de Physicochimie Structurale 3, URA, CNRS, Campus de Beaulieu, F-35042 Rennes, France
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Publication Date:
08 March 2002 (online)

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1,ω-Alkanediamines 1a-c or ω-aminoalcohols 5a-d adsorbed over alumina or montmorillonite K10 react with ethyl levulinate [ethyl 4-oxopentanoate (2)] under microwave irradiation to give, within a few minutes, compounds such as 7a-methyl-2,3,7,7a-tetrahydro-1H-pyrrolo [1,2-a]imidazol-5(6H)-one (3a) and 7a-methyl-2,3,7,7a-tetrahydropyrrolo[2,1-b]oxazol-5(6H)-one (6a).