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Synlett 1999; 1999(2): 231-233
DOI: 10.1055/s-1999-2572
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Novel Approach to 6-Chromanols via Photochemical Benzannulation of α-exo-Benzylidene-2-oxacyclohexylidene Chromium Complexes

Bernd Weyershausen* , Karl-Heinz Dötz
  • *Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität, Gerhard-Domagk-Str. 1, D-53121 Bonn, Germany; Fax +49-2 28-73 58 13; E-mail: doetz@uni-bonn.de
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Publication Date:
31 December 1999 (online)

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6-Chromanols were prepared via photochemical benzannulation of the α-exo-benzylidene-2-oxacyclohexylidene chromium complex 2 with various alkynes. No benzannulation reaction, however, is observed under the thermal standard conditions.

chromium - carbene complexes - photochemistry - benzannulation - 6-chromanols

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