SCHEDULED MAINTENANCE
Photolysis of benzonorbornene-2,3-dione in acetone at –60 °C yields a diastereomeric mixture of 1-(indanyl)-1H-indenes considered to arise from [8π+ 8π+ 2 σ]-cyclodimerisation of isoindene: these structures have been confirmed by synthesis, and full stereochemical assignments made following conversion into dihydro-derivatives.
R. N. Warrener, I. G. Pitt and R. A. Russell, J. Chem. Soc., Chem. Commun., 1982, 1136 DOI: 10.1039/C39820001136
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