biostudies-literatureIrziqat BSwiss National Science Foundation13523-13526https://www.ebi.ac.uk/biostudies/studies/S-EPMC8518606biostudies-literatureUnknown27(54)Flattening helices while keeping the handedness: On-surface cyclodehydrogenation of bishelicene enantiomers leads stereospecifically to (M,M) and (P,P) chiral planar polyaromatic hydrocarbons. This is followed by their homochiral aggregation into a 2D conglomerate. Thermally induced cyclodehydrogenation proceeds stereospecifically to chiral, planar coronocoronene. Such a reaction is a special example of topochemistry in which enantiospecific conversion is supported by the alignment of the reactant by the surface.Chemistry (Weinheim an der Bergstrasse, Germany)Stereospecific on-Surface Cyclodehydrogenation of Bishelicenes: Preservation of Handedness from Helical to Planar Chirality.PMC8518606182082Parschau MCebrat AMartin KAvarvari NIrziqat BBaljozovic MErnst KHfalseStereospecific on-Surface Cyclodehydrogenation of Bishelicenes: Preservation of Handedness from Helical to Planar Chirality.Flattening helices while keeping the handedness: On-surface cyclodehydrogenation of bishelicene enantiomers leads stereospecifically to (M,M) and (P,P) chiral planar polyaromatic hydrocarbons. This is followed by their homochiral aggregation into a 2D conglomerate. Thermally induced cyclodehydrogenation proceeds stereospecifically to chiral, planar coronocoronene. Such a reaction is a special example of topochemistry in which enantiospecific conversion is supported by the alignment of the reactant by the surface.2021-01-01T00:00:00Z2021 Sep2025-04-04T19:44:58.551Z2025-04-04T19:44:58.551ZS-EPMC85186063438792610.1002/chem.202102069