Abstract magnified image This review intends to explore synthetic methodologies for the preparation of 2 H‐ chromenes and their analog chromanes through ortho ‐quinone methide ( o ‐QM) intermediates associated with inter and intramolecular hetero‐Diels‐Alder and electrocyclization reactions. J. Heterocyclic Chem., (2009).
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Ferreira et al. (2009) studied this question.
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