“…In recent years, transition metal catalyzed dearomatization of phenol and naphthol derivatives has been explored widely for the preparation of different spirocarbocyclic molecules . Pioneering examples of transition metal-catalyzed dearomative spirocyclizations were recognized by the groups of Hamada, You, Buchwald, and Feringa through an intramolecular design by using tethered phenol ,, and naphthol. ,,,, Also, intermolecular approaches were developed by the groups of Luan, Gulías and Mascareñas, Lam, You, Xu, and Jia and the methods mainly involve Ru II -, Rh III -, and Pd-catalyzed dearomatizing [3 + 2] spiroannulations of phenol-derived biaryls with alkynes. In contrast metal-free approaches are less.…”