SCHEDULED MAINTENANCE
Evidence is presented for the generation of cyclobutadiene dianion, a Hückel aromatic, from cis-dichlorocyclobutene and sodium naphthalide; although highly reactive, the dianion can be deuteriated to afford 3,4-dideuteriocyclobutene.
J. S. McKennis, L. Brener, J. R. Schweiger and R. Pettit, J. Chem. Soc., Chem. Commun., 1972, 365 DOI: 10.1039/C39720000365
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