摘要: 1-Naphthyl magnesium bromide reacts with 2, 3-dichloro-1,4-naphthoquinone (I) to yield the diol (II). This is reduced dinaphthyldichloronaphthalene (III) in boiling acetic acid hydriodic acid. Cyclization a sodium chloride—aluminium chloride melt gives dichloroterrylene (IV). The chlorine atoms can be removed by hydrogenation and red phosphorus under pressure, which leads picene derivative (V). Lower hydrogenated derivatives some terrylene are formed same reduction. dehydrogenation of (V) (VI) carried out palladium—charcoal.1