G. Mehta et al., A SYNTHETIC APPROACH TOWARDS PINAKENE, A C28H14 FRAGMENT OF [70]-FULLERENE, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 36(4), 1997, pp. 301-302
During a projected synthesis of 4,7,11,14-tetramethyldibenzo [fg,op] n
aphthacene 3 en route to Pinakene 2, a [70]-fullerene fragment, an unp
recedented photochemical reaction leads to dimethylnaphthacene derivat
ive 7. Flash vacuum pyrolysis on 7 leads to 8 via a transannular bridg
ing.