title: Synthesis of 5,10,15,20-tetrakis(4-tert- butyl-2,6-dicarboxyphenyl)porphyrin: a versatile bis-faced porphyrin synthon for D4-symmetric chiral porphyrins.
abstract: [see structure]. A versatile bis-faced porphyrin synthon, 5,10,15,20-tetrakis(4-tert-butyl-2,6-dicarboxyphenyl)porphyrin, was synthesized. The eight carboxyl groups were readily converted into various amide groups, and condensation with chiral amines led to various D4-symmetric chiral porphyrins with rigid structures.
authors.affiliation: Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakagawa
authors.forename: T
authors.initials: T
authors.lastname: Nagano
authors.forename: T
authors.initials: T
authors.lastname: Higuchi