title: Chiral and achiral basket-handle porphyrins: short synthesis and stereostructures of these versatile building blocks.
abstract: Both, chiral and achiral basket-handle porphyrins were synthesized via a short, reliable, and efficient route in multigram quantities. Standard synthetic protocols such as metalation of the macrocycle, halogenation, and borylation of the porphyrin core or alkyl- and arylation with lithium organyls were successfully adapted. The planar-chiral representatives were resolved into their enantiomers, whose absolute configurations were determined by comparison of experimental CD spectra with TDCAM-B3LYP calculated ones.
authors.affiliation: Institute of Organic Chemistry, University of Würzburg , Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Andreas C
authors.initials: AC
authors.lastname: Gehrold
authors.forename: Torsten
authors.initials: T
authors.lastname: Bruhn
authors.forename: Heidi
authors.initials: H
authors.lastname: Schneider
authors.forename: Udo
authors.initials: U
authors.lastname: Radius
authors.forename: Gerhard
authors.initials: G
authors.lastname: Bringmann