Palladium-Catalyzed Remote ortho-C-H Alkenylation of Alkyl Aryl Sulfones: Access to Densely Functionalized Indane Derivatives
Entity
UAM. Departamento de Química OrgánicaPublisher
Wiley-VCH VerlagDate
2016-03-31Citation
10.1002/adsc.201501129
Advanced Synthesis and Catalysis 358.7 (2016): 1065-1072
ISSN
1615-4150 (print); 1615-4169 (online)DOI
10.1002/adsc.201501129Funded by
We thank the Spanish Government (MINECO, CTQ2012- 35790) for financial support. P.D. L. thanks the Spanish Government (MINECO) for an FPU predoctoral fellowshipProject
Gobierno de España. CTQ2012- 35790Editor's Version
http://dx.doi.org/10.1002/adsc.201501129Subjects
2-pyridyl sulfones; C-H alkenylation; Indanes; Michael-type addition; Palladium; QuímicaNote
This is the peer-reviewed version of the following article: Advanced Synthesis and Catalysis 358.7 (2016): 1065-1072, which has been published in final form at http://dx.doi.org/10.1002/adsc.201501129. This article may be used for non-commercial purposes in accordance with Wiley-VCH Terms and Conditions for Self-ArchivingRights
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimAbstract
A practical method for the palladium-cat-alyzed ortho-olefination of benzyl and phenethyl 2-pyridyl sulfones with electron-deficient alkenes using N-fluoro-2,4,6-trimethylpyridinium triflate ([F+]) as the terminal oxidant is described. The che-lating auxiliary (2-pyridyl)sulfonyl unit was demon-strated to be the key to the success of this reaction, which occurs efficiently with excellent regioselectiv-ity and monosubstitution selectivity. A variety of steric and electronic changes to both coupling part-ners is tolerated, including substitution at the ben-zylic position of the sulfone compound. Further-more, no appreciable loss of enantiopurity is ob-served when using non-racemic substrates. This method provides access to indane derivatives hold-ing three contiguous stereogenic centers with high diastereocontrol. The indane framework was con-structed by intramolecular Michael addition of the a-sulfonyl carbanion to the electrophilic alkene
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Google Scholar:Legarda, Pablo D.
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García-Rubia, Alfonso
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Gómez Arrayas, Ramón Jesús
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Carretero Gonzálvez, Juan Carlos