Synthesis and cycloadditions of 9H-furo[
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G.Elena Daia; Christopher D. Gabbutt; John D. Hepworth; B.Mark Heron; David E. H
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Article
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2002
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Elsevier Science
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French
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C-2 lithiation of acetals 2 followed by trapping with aldehydes gives 3. Subsequent unmasking of the acetal function provides furobenzo(thio)pyrans 4, cycloadditions of which have been investigated.