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DOI: 10.1055/s-0036-1588987
Oxidative Cyclization of β,γ-Unsaturated Carboxylic Acids Using Hypervalent Iodine Reagents: An Efficient Synthesis of 4-Substituted Furan-2-ones
Publikationsverlauf
Received: 16. Februar 2017
Accepted after revision: 09. März 2017
Publikationsdatum:
30. März 2017 (online)


Published as part of the Special Topic Modern Strategies with Iodine in Synthesis�
Abstract
The oxidative cyclization of β-substituted β,γ-unsaturated carboxylic acids using a hypervalent iodine reagent to provide 4-substituted furan-2-one products, is reported. In this cyclization, the use of a highly electrophilic PhI(OTf)2, which is in situ prepared from PhI(OAc)2 and Me3SiOTf, is crucial. Depending on the substitution pattern at the α-position of the substrates, furan-2(5H)-ones or furan-2(3H)-ones are produced. Thus, the present method offers a useful tool for accessing various types of 4-substituted furan-2-ones that are important structural motifs in the field of organic chemistry and medicinal chemistry.
Key words
hypervalent iodine - oxidation - cyclization - β,γ-unsaturated carboxylic acids - furanonesSupporting Information
- Supporting information for this article is available online at http://dx.doi.org/10.1055/s-0036-1588987.
- Supporting Information