Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5216619 | Tetrahedron | 2013 | 13 Pages |
Abstract
An efficient and convenient approach to the synthesis of spirocyclic oxindoles from iodoindoles has been developed. The most striking feature of this approach is that the sequential intramolecular Ullmann coupling and Claisen rearrangement proceeds in a one-pot manner to afford 3-spiro-2-oxindoles in good yield with excellent diastereoselectivity. Application of this one-pot reaction to chiral non-racemic tertiary alcohol substrates resulted in complete chirality transfer to the spirocyclic quaternary carbon. Using this method, asymmetric total synthesis of (â)-debromoflustramine B was accomplished.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Hiroshi Miyamoto, Tomohiro Hirano, Yoichiro Okawa, Atsuo Nakazaki, Susumu Kobayashi,