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Beilstein J. Org. Chem. 2013, 9, 1883–1890, doi:10.3762/bjoc.9.221
Graphical Abstract
Scheme 1: Photocyclization of stilbene to phenanthrene.
Figure 1: Flow-reactor setup used in the optimization study.
Scheme 2: Photo-flow synthesis of [5]- and [6]helicenes. aFor experimental details see Supporting Information File 1. bReaction conditions...
Scheme 3: Scale up synthesis of the [5]helicene derivative 2o.