Reinhold Oehrlein

Stereoselective ketene-claisen rearrangement of chiral allylthioethers

Abstract A new method for the preparation of chiral β-branched, γ,δ-unsaturated thioesters and derivatives is presented, which involves the ketene-Claisen rearrangement of chiral allylthioethers. A novel synthesis of the starting chiral allylthioethers is also described.

Synthesis and Electrophoretic Properties of Novel Nanoparticles for Colored Electronic Ink and e-Paper Applications.

A new approach based on non-pigmented, stable colored nanoparticles able to migrate upon application of an electrical field (10-60 V) has been developed for the improvement of the color brightness of e-displays. The scientific challenges comprised the development of efficient syntheses of tri- and bifunctional dendrimers including branching points for further extension and individual decoration with dye (yellow, magenta, cyan). The covalent attachment of these scaffolds to silica nanoparticles was performed via hydrosilylation and final in situ charging generated attractive silica shells for the substractive CMY color space model.