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ChemInform Abstract: Highly Substituted Spiro[4.4]nonatrienes from a β-Amino-Substituted α,β-Unsaturated Fischer Carbene Complex and Three Molecules of an Arylalkyne.

✍ Scribed by Heiko Schirmer; Michael Duetsch; Frank Stein; Thomas Labahn; Burkhard Knieriem; Armin de Meijere

Publisher: John Wiley and Sons
Year: 2010
Weight: 33 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199934103

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A novel mode of reaction towards arylethynes is shown by the β-trimethylsilyl-substituted α,β-unsaturated Fischer carbene complexes 1. A mixture of the isomeric, highly substituted spiro[4.4]nonatrienes 2 and 3 is formed by the formal insertion of three alkyne molecules and subsequent cyclization (s

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