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- Title
Rhodium(I)-Catalyzed Intermolecular [2+2+2] Cycloaddition of Allenyl Aldehydes with Alkynes and Related Cyclization.
- Authors
Oonishi, Yoshihiro; Saito, Akira; Sato, Yoshihiro
- Abstract
Rhodium(I)-catalyzed cyclization of allenyl aldehydes with various alkynes was investigated. The cyclizations of internal alkynes that have both an electron-rich aromatic ring and an electron-withdrawing group at the terminus afforded [2+2+2] cycloaddition products in good yields with good to high regio- and enantioselectivity, while the reactions of terminal alkynes gave dienyl ketones instead of [2+2+2] cycloaddition products in good yields. These results indicate that the nature of the alkynes greatly influences the reaction course.
- Subjects
RHODIUM catalysts; RHODIUM; PLATINUM group catalysts; ALDEHYDES; ALKYNES
- Publication
Asian Journal of Organic Chemistry, 2015, Vol 4, Issue 1, p81
- ISSN
2193-5807
- Publication type
Article
- DOI
10.1002/ajoc.201402239