Domino [2+2]/[2+1] and [3+2]/[2+1] Reaction Sequences of Alkynyl(alkoxy) Chromium Fischer Carbene Complexes

Domino [2+2]/[2+1] and [3+2]/[2+1] Reaction Sequences of Alkynyl(alkoxy) Chromium Fischer Carbene Complexes

A tandem [2+2]/[2+1] sequence takes place between alkynyl(alkoxy) Fischer carbene complexes and 2,3‐dihydrofuran, producing three‐component adducts diastereoselectively in moderate yields. On the other hand, a [3+2]/[2+1] (1,3‐dipolar cycloaddition/cyclopropanation) sequence takes place between an a...

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Veröffentlicht in:European Journal of Organic Chemistry 2007-07, Vol.2007 (21), p.3480-3487
Hauptverfasser: Pérez-Anes, Alexandra, García-García, Patricia, Suárez-Sobrino, Ángel Luis, Aguilar, Enrique
Format: Artikel
Sprache:eng
Schlagworte:
Carbenes
Cyclopropanation
Domino reactions
Oxygen heterocycles
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Zusammenfassung:A tandem [2+2]/[2+1] sequence takes place between alkynyl(alkoxy) Fischer carbene complexes and 2,3‐dihydrofuran, producing three‐component adducts diastereoselectively in moderate yields. On the other hand, a [3+2]/[2+1] (1,3‐dipolar cycloaddition/cyclopropanation) sequence takes place between an alkynyl(alkoxy) Fischer carbene complex, trimethylsilyldiazomethane, and methyl acrylate or 2,3‐dihydrofuran. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
ISSN:1434-193X
1099-0690
DOI:10.1002/ejoc.200700077