SCHEDULED MAINTENANCE
Benzocyclobutene (5) and a bis-annelated derivative (8) have been synthesized by the Diels-Alder addition of dimethyl cyclobut-1-ene-1,2-dicarboxylate (1) to an appropriate diene and subsequent aromatization of the resulting six-membered ring.
R. P. Thummel, J. Chem. Soc., Chem. Commun., 1974, 899 DOI: 10.1039/C39740000899
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