期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 25, 期 68, 页码 15609-15614出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201903750
关键词
phosphahelicenes; phospholenes; photocyclization; p-stereogenic; thiophosphinic acids
资金
- Agence Nationale de la Recherche (ANR) [ANR-15-CE29-0012-01]
- Centre National de la Recherche Scientifique (CNRS)
- GDR Phosphore
- Indo-French Center for the Promotion of Advanced Research (IFCPAR/CEFIPRA) [N8 5505-2]
- National Science Foundation (U.S.A.) [CHE-1560881]
- Agence Nationale de la Recherche (ANR) [ANR-15-CE29-0012] Funding Source: Agence Nationale de la Recherche (ANR)
Phosphahelicenes with thiophosphinic acid and ester functions have been obtained by the oxidative photocyclisation of olefins bearing both a benzophenanthrene and a benzophosphole unit. When the method has been extended to olefins bearing a partially saturated benzophospholene unit, a divergent regioselectivity of the photocyclisation step has been observed, leading to new helicenes in which the phosphorus function is located on the external rim of the helical backbone. The observed regioselectivity correlates well with the free-valence numbers of the atoms involved in the photocyclisation reaction (DFT calculations).
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