Article révisé par les pairs
Résumé : On acid treatment, 1-hydroxymethyl[6]helicene (1) gives 5-H-benzo [c,d]pyrene-5-spiro-1′-indene (2). The structure of the rearranged hydrocarbon was provisionally assigned by catalytic hydrogenation, 2H labelling, U.V., 1H- and 13C-NMR spectroscopy and confirmed by an X-ray diffraction study (M. Van Meerssche and coll., personal communication). © 1975.