LETTERS IN ORGANIC CHEMISTRY, vol.17, no.10, pp.801-805, 2020 (SCI-Expanded)
Racemic dicarboxylic acids were synthesized from the Diels-Alder cycloaddition reactions which formed the dibenzobarrelene and norbomene skeletons. The pure enantiomers of these compounds were obtained using brucine as the chiral auxiliary. Novel C-2-symmetric chiral benzimidazole derivatives were synthesized from the reaction of the diaminobenzene and enantiomeric dicarboxylic acids in the presence of boric acid.