Synthese und Röntgenstruktur einer Triafulvalen-Vorstufe
Triafulvalene precursors 3b and 3c have been synthesized by CuII-catalyzed 'carbene dimerization' of cyclopropyl carbenoids (obtained by halogen-lithium exchange of 1,1-dibromo-2-(phenylthio)-3-(trimethylsilyl)cyclopropane (2b; see Scheme 2) in moderate yields. Diastereoselectivity of the...
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| Veröffentlicht in: | Chimia 1992-09, Vol.46 (9) |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | ger |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Triafulvalene precursors 3b and 3c have been synthesized by CuII-catalyzed 'carbene dimerization' of cyclopropyl carbenoids (obtained by halogen-lithium exchange of 1,1-dibromo-2-(phenylthio)-3-(trimethylsilyl)cyclopropane (2b; see Scheme 2) in moderate yields. Diastereoselectivity of the central step 2b ? 3b is low. An X-ray analysis of the predominantly formed trans-anti isomer has been performed. |
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| ISSN: | 0009-4293 2673-2424 |