Access to racemic and enantioenriched 3-methyl-4-chromanones: catalysed asymmetric protonation of corresponding enolic species as the key step

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Keywords: 4-chromanones; Bronsted acids; Friedel-Crafts cyclisation; aminoborneol; asymmetric catalysis; benzylic cleavage; decarboxylation; protonation

Document Type: Research Article

DOI: http://dx.doi.org/10.1016/j.tet.2003.09.095

Affiliations: Unite Mixte de Recherche 'Reactions Selectives et Applications', CNRS-Universite de Reims Champagne-Ardenne, BP 1039, 51687 Cedex 2, Reims, France

Publication date: November 24, 2003

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