Novel extended aromatic π-electron systems, the hydrocarbons 4, 5, 8, 11, and 13 are readily available by coupling reactions from the recently described ethynyl[2.2]paracyclophanes.
No takes yet. Share an insight, caveat, or question.
Hopf et al. (2006) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: