Chiral 1,2- and 1,3-Diol-Functionalized Chromophores as Lego Building Blocks for Coupled Structures

Chiral nitroanilines containing 1,2- or 1,3-diol functionalities
have been synthesized by nucleophilic aromatic substitution
of fluoronitroanilines with 1-aminopropane-2,3-diols and
2-aminopropane-1,3-diol in the melt. X-ray structure analyses confirm retention of the configuration of the chiral center.
The novel chromophores are suitable to link reversibly to
various substituted arylboronic acids which allows the
construction of new solvatochromic sensor molecules suitable
to response to solvent and anion coordination by fluoride.
The solvatochromism of the new compounds has been
studied using the Kamlet−Taft LSE relationship.