C sp 3H Bond Activation Triggered by Formation of Metallacycles: Rhodium(I)-Catalyzed Cyclopropanation/Cyclization of Allenynes

C sp 3H Bond Activation Triggered by Formation of Metallacycles: Rhodium(I)-Catalyzed Cyclopropanation/Cyclization of Allenynes

Giving direction: An C sp 3H bond activation directed by a rhodacycle intermediate has been found to occur in a RhI‐catalyzed reaction between an allene moiety having a tert‐butyl substituent, and tethered alkynes. Cyclic compounds containing a cyclopropane ring were obtained in good to high yields...

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Veröffentlicht in:Angewandte Chemie International Edition 2012-07, Vol.51 (29), p.7305-7308
Hauptverfasser: Oonishi, Yoshihiro, Kitano, Yoshitaka, Sato, Yoshihiro
Format: Artikel
Sprache:eng
Schlagworte:
Alkynes - chemical synthesis
Alkynes - chemistry
allenyne
Catalysis
Cyclization
cyclopropane
Cyclopropanes - chemical synthesis
Cyclopropanes - chemistry
CH activation
rhodium
Rhodium - chemistry
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Zusammenfassung:Giving direction: An C sp 3H bond activation directed by a rhodacycle intermediate has been found to occur in a RhI‐catalyzed reaction between an allene moiety having a tert‐butyl substituent, and tethered alkynes. Cyclic compounds containing a cyclopropane ring were obtained in good to high yields (up to 92%).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201203772