SYNTHESIS OF CYCLOHEPTA[A]PHENALENE-6,12-DIONE

• Published in: Angewandte Chemie International Edition Vol. 24; no. 9; pp. 757 - 758
• Main Authors: KURODA, S, FUKUYAMA, Y, TSUCHIDA, T, TANAKA, E, HIROOKA, S
• Format: Journal Article
• Language: English
• Published: WEINHEIM Wiley 01.09.1985
• Subjects: Chemistry; Chemistry, Multidisciplinary; Physical Sciences; Science & Technology

Tetracyclic dications 2, which exhibit a diamagnetic ring current, were obtained from the non-benzenoid quinones 1, R = H or Br, with conc. H2SO4. The dictions contain 16 .pi.-electrons in the ring system.