A Convenient Triisobutylaluminium (TIBAL)-Promoted Johnson-Claisen Approach to γ,δ-Unsaturated Alcohols
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L. Cosgrove, Kelly
P. McGeary, Ross
P. McGeary, Ross
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2009
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Abstract
Mixed ortho esters derived from allylic alcohols undergo methanol elimination in the presence of triisobutylaluminium (TIBAL) at room temperature to form mixed ketene acetals. TIBAL then promotes immediate Claisen rearrangement of these intermediates, and subsequent reduction of the ester products, to give unsaturated ?,d-primary alcohols in a convenient, one-pot procedure.
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Synlett
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2009
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11
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Organic Chemical Synthesis
Medicinal and Biomolecular Chemistry
Organic Chemistry