The title compound (3a) undergoes Diels–Alder reactions with isoprene, cyclopentadiene, and cyclohexa-1,3-diene; the adducts (4) and (5a,b) can be transformed into the leucoquinizarins (6) and (7a,b) which are potentially valuable precursors of anthracyclinone analogues.
M. Chandler and R. J. Stoodley, J. Chem. Soc., Chem. Commun., 1978, 997 DOI: 10.1039/C39780000997
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