ChemInform Abstract: Carbenes and the O‐H Bond: Benzoannelated Cycloheptatrienylidenes.

Abstract

Benzocycloheptatriene derivatives such as the chlorides (I), (VIII), and (IX) or the tosylhydrazone (VII) are submitted to solvolysis with sodium ethoxide (II) in ethanol, yielding the isomeric ethoxybenzocycloheptatrienes (III) ‐ (VI) and (X).