Helicenes. Resolution on chiral charge-transfer complexing agents using high performance liquid chromatography

Abstract
The ten known carbohelicenes were rapidly and completely resolved by high performance liquid chromatography (h.p.l.c.) on short columns containing the optically active charge transfer (C.T.) complexing agent 2-(2,4,5,7-tetranitro-9-fluorenylideneamino-oxy)propionic acid (TAPA) or its 2-butyric acid homologue (TABA).

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