title: C3-symmetrical tribenzotriquinacene derivatives: optical resolution through cryptophane synthesis and supramolecular self-assembly into nanotubes.
abstract: Based on a regioselective tris-formylation of a tribenzotriquinacene (TBTQ) hydrocarbon, the racemic C(3)-symmetrical TBTQ-trialdehyde and the corresponding TBTQ-trimethanol were synthesized along with their C(1)-isomers. Conversion of the C(3)-trialdehyde to three diastereomeric TBTQ-based cryptophanes occurring in high yield enabled the preparation of the optically pure C(3)-symmetrical TBTQ-trialdehydes and the determination of their absolute configuration. The racemic C(3)-symmetrical TBTQ-trimethanol was found to form several stable nanotubular aggregates in the solid state.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Yu-Fei
authors.initials: YF
authors.lastname: Zhang
authors.forename: Qin-Qing
authors.initials: QQ
authors.lastname: Hou
authors.forename: Wen-Rong
authors.initials: WR
authors.lastname: Xu
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Cao
authors.forename: Hak-Fun
authors.initials: HF
authors.lastname: Chow
authors.forename: Dietmar
authors.initials: D
authors.lastname: Kuck