title: A new stabilised form of isobenzofuran, rack-mounted on an alicyclophane.
abstract: New stable, crystalline isobenzofurans 9a and 9b linked through the 1,3-positions and incorporated into alicyclophanes have been prepared from the related furanoalicyclophane 5 in three steps (i) addition of benzyne or 4,5-bis(trimethylsilyl)benzyne (ii) hydrogenation of the pi-bond (iii) ejection of ethylene by flash vacuum pyrolysis, and shown to yet retain high 1,3-diene character and form adducts with dienophiles, e.g. dimethyl acetylenedicarboxylate or N-methyl maleimide; the corresponding off-rack 1,3-dimethylisobenzofurans were too unstable for isolation.
authors.affiliation: Centre for Molecular Architecture, Central Queensland University, Rockhampton, Queensland, 4702. r.warrener@cqu.edu.au
authors.forename: R N
authors.initials: RN
authors.lastname: Warrener
authors.forename: M
authors.initials: M
authors.lastname: Shang
authors.forename: D N
authors.initials: DN
authors.lastname: Butler