Helvetica Chimica Acta p. 71 - 84 (1986)
Update date:2022-08-02
Topics:
Gleiter, Rolf
Jaehne, Gerhard
Mueller, Georg
Nixdorf, Matthias
Irngartinger, Hermann
The synthesis of 1,5-dimethyltricyclo<3.3.0.02,8>octane-3,7-dione (2), 1,5-dimethyltetracyclo<3.3.02,804,6>octane-3,7-dione (3), the corresponding dienes 5 and 6 as well as the mixed enones 13-15 is reported.Using He(I) photoelectron spectroscopy (PE) as a tool, a considerable interaction between the n orbitals on the O-atoms and the ? frame in 2 and 3 as well as of the double bonds in 5 and 6 and the ? frame is found.These interactions are also traced back by the electronic absorption spectra of these compounds.The molecular structures of 2 and 3 have been investigated by X-ray analysis.
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