HC Kang, AW Hanson, B Eaton… - Journal of the American …, 1985 - ACS Publications
Gas-phase pyrolysis of benzo [l, 2; 4, 5] dicyclobutene (4) in a nitrogen stream at 425 C
gives [24](l, 2, 4, 5) cyclophane (7),[26](l, 2, 4, 5) cyclophane (10, deltaphane), and 14, 20 …