Angewandte Chemie International Edition in English · 1979 · 11 citations · 9 references
Natural SciencesChemistryPhysical ChemistryHeterocycle SynthesisHeterocyclic ChemistryHeterocyclic CompoundsMacrocycle Synthesis[2+2] CycloadditionHeterocyclic Ring OpeningIntramolecular Bond Rearrangement
Rearrangements of bicyclopentenes have previously been examined mainly in connection with ring opening to give cyclopentadienes. Surprisingly, the thermal “walk” rearrangement (1a) → (2a) (X = Me, Y = CO2Me) already occurs at 0°C.
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