Investigation of the Scope of a Co-Mediated O C Ring-Contraction

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• 作者：Simon J. Meek ; Fabienne Pradaux ; Emmanuel H. Demont ; Joseph P. A. Harrity
• 刊名：Journal of Organic Chemistry
• 出版年：2007
• 出版时间：April 27, 2007
• 年：2007
• 卷：72
• 期：9
• 页码：3467 - 3477
• 全文大小：224K
• 年卷期：v.72,no.9(April 27, 2007)
• ISSN：1520-6904

文摘

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A series of dihydropyrans bearing a dicobalthexacarbonyl moiety have been found to undergo an efficientAl-promoted O C ring-contraction process. This rearrangement reaction operates successfully for abroad range of substrates. Moreover, the potential of this approach for generating cyclopropanes fromthe corresponding dihydrofurans has been demonstrated.