Synlett 1990; 1990(1): 20-32
DOI: 10.1055/s-1990-20975
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Tailoring the Reactivity of Small Ring Building Blocks for Organic Synthesis

Armin de Meijere* , Ludger Wessjohann
  • *Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz 6, D-2000 Hamburg 13, Federal Republic of Germany
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Publication History

Publication Date:
08 March 2002 (online)

The syntheses and reactivities of some new cyclopropane containing C5-building blocks with composite functionalities are described. Recent applications of cyclopropylideneacetates in short syntheses of spirocyclopropane-annulated heterocycles and cyclopropane-containing biologically active compounds are demonstrated. Cyclopropylacetylenes are employed as cyclopentane annulation reagents and are particularly useful in the construction of terpenoid frameworks. 1. Introduction 2. The Initial Experiment: 1-Chloro-1-(trichlorovinyl)cyclopropanes from Olefins 3. Cyclopropylideneacetates 4. Cyclopropylacetylenes 5. Conclusion

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