Hydrogen-Bond-Induced Selectivity of a Head-to-Head Photo- Dimerization of Dialkynylanthracene – Access to Tetra Lewis Acids

Abstract

Using 2-hydroxypropyl-protecting groups, 1,8-dialkynylanthracene photo-dimers were prepared in head-to-head-configuration by UV irradiation on a multigram scale. In non-polar solvents, the combination of non-covalent hydrogen bonds and π-π-interactions induces the formation...