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Synlett 1991; 1991(4): 241-242
DOI: 10.1055/s-1991-20692
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Imidazole Derivatives. Part VI.1 A Diastereoselective Spirobicyclization Reaction Leading to the Novel Imidazo[1′ ,2′:1,2]pyrrolo[2,3-b]furans

Hans-Joachim Knölker* , Detlev Döring, Abdel-Aziz El-Ahl, Peter G. Jones
  • *Institut für Organische Chemie der Universität, Schneiderberg 1B, D-3000 Hannover 1, Germany
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Publication Date:
07 March 2002 (online)

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We describe a novel diastereoselective one-pot spirobicyclization reaction of 1-propanoylimidazole with dimethyl acetylenedicarboxylate (DMAD) to give the previously unknown imidazo[1′ ,2′ :1,2]-pyrrolo[2,3-b]furan ring system, confirmed by X-ray crystallography.

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