A transannular π-bond pairing approach to the synthesis of 1,3-cyclopentadiene diesters and maleimido-oxepines and a report on their isomerisation

Article abstract of DOI:10.1016/S0040-4039(00)97246-0

Polycyclobutanoid compounds containing an end-fused 3-membered ring are central to the synthesis of the title target molecules: a new mode for their production is presented. Cyclopentadiene 1,3-diester is isolated and its isomerisation studied. Intermediates supporting the oxygen-walk isomerisation of maleimido-oxepines are isolated.