Heterobimetallic dibenzoindenyl (Cr(CO)3-Re(CO)3) complexes via chromium-templated [3 + 2 + 1]benzannulation: synthesis and molecular structures |
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Authors: | Dubarle Offner Julien Schnakenburg Gregor Rose-Munch Françoise Rose Eric Dötz Karl Heinz |
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Affiliation: | Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms Universit?t Bonn, Bonn, Germany D-53127. |
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Abstract: | Heterobimetallic (di)benzoindenyl Re-Cr complexes have been prepared by a sequence starting from (8-bromobenzo[e]-indenyl)potassium. Reaction with pentacarbonylrhenium bromide affords tricarbonylrhenium complex 2, which has been modified to rhenium-chromium carbene complex 3. Its chromium-templated [3 + 2 + 1]benzannulation afforded the anti(Cr(CO)(3)-Re(CO)(3)) dibenzoindenyl complex 4 as the major product along with the syn diastereoisomer 5. The molecular structures of all heterobimetallic complexes were established by X-ray analyses. |
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