An Improved and Versatile Method for the
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Richard Detterbeck; Manfred Hesse
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Article
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2003
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John Wiley and Sons
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German
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## Abstract Boron tribromide is presented as a highly reactive reagent that __simultaneously__ allows the demethylation and fully diastereoselective cyclization of different precursor molecules, obtained by an aldolβtype reaction, to a series of hydroxylated aryldihydrobenzofuran systems in racemic