138. Lewis Acid Induced Tandem Diels−Alder Reaction/Ring Expansion as an Equivalent of a [4 + 3] Cycloaddition

Authors: Huw M. L. Davies and Xing Dai

J. Am. Chem. Soc.,

2004, 126 (9), 2692–2693


Aluminum chloride induced reaction between cyclopentadiene and α,β-unsaturated aldehydes results in the stereoselective formation of the products of a formal [4 + 3] cycloaddition. The reaction proceeds by a tandem Diels−Alder reaction/ring expansion.

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