Cyclopentanoid Synthesis via the Intramolecular Trapping of Oxy-Cope Intermediates. Stereocontrolled Synthesis of the cis- and trans-Hydroazulene Skeleton

Article abstract of DOI:10.1021/jo00234a029

The <3,3>-sigmatropic rearrangement of C5-substituted oxy-Cope derivatives was examined.With halomethyl groups the reaction sequence is efficiently directed to cyclopentanoid ring formation.