Abstract We synthesized stilbenoid (E)-(P, P)-and (E)-(M, M)-[6] helicene dimers in enantiomerically pure form as part of a program aimed at the exploration of new strategies for the synthesis of large helicenes. The [2+ 2+ 2] cyclotrimerization of suitable triynes, reported by Starý and co-workers, was applied for the preparation of a racemic 2- hydroxymethylated [6] helicene precursor, which was conveniently resolved by HPLC on a ...
