‘Face-to-Face’-Benzo-anellierte homologe Hypostrophene. Synthesen,Röntgenstrukturanalysen und PE-Spektren |
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Authors: | Wolf-Dieter Fessner Gottfried Sedelmeier Lothar Knothe Horst Prinzbach Grety Rihs Zhong-Zhi Yang Branka Kova
Edgar Heilbronner |
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Institution: | Wolf-Dieter Fessner,Gottfried Sedelmeier,Lothar Knothe,Horst Prinzbach,Grety Rihs,Zhong-Zhi Yang,Branka Kova?,Edgar Heilbronner |
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Abstract: | ‘Face-to-Face’ Benzo-anellated Homologous Hypostrophenes. Syntheses, X-Ray-Structure Analyses and PE Spectra ‘Face-to-face’ Benzo-anellated homologous hypostrophenes (series M ), of interest as substrates for 6 + 6]-photocycloaddition reactions, have been synthesized. From X-ray structural analyses of 13b and 13c shortest C? C distances of 2.80(2.76)/2.71 Å and interorbital angles (ω) of 129° (128°)/130° between the benzene rings have been determined. The PE spectra are discussed in the context of transannular π,π interactions. |
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