title: Highly sensitive chiral shift reagent bearing two zinc porphyrins.
abstract: A new type of chiral receptor (R,R)- or (S,S)-1b with C(2) symmetry was synthesized. An induced-fit type of binding behavior of 1b for diamines was revealed by CD spectroscopy. NMR studies demonstrated that 1b can function as a highly sensitive chiral shift reagent for the determination of the enantiomeric purity of chiral diamines, aziridine, and isoxazoline at the microgram level. [structure: see text]
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Okayama University, Tsushima, Okayama 700-8530, Japan. ema@cc.okayama-u.ac.jp
authors.forename: Tadashi
authors.initials: T
authors.lastname: Ema
authors.forename: Nozomi
authors.initials: N
authors.lastname: Ouchi
authors.forename: Tokuhiro
authors.initials: T
authors.lastname: Doi
authors.forename: Toshinobu
authors.initials: T
authors.lastname: Korenaga
authors.forename: Takashi
authors.initials: T
authors.lastname: Sakai