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Struktur und UV.‐Absorption von Bicyclo[2, 2, 2]7‐octen‐2,5‐dion. Bicyclo[2, 2, 2]octan‐Reihe. 5. Mitteilung
Author(s) -
Grob C. A.,
Weiss A.
Publication year - 1960
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19600430522
Subject(s) - chemistry , bicyclic molecule , octene , absorption (acoustics) , decarboxylation , medicinal chemistry , stereochemistry , organic chemistry , optics , ethylene , physics , catalysis
Bicyclo[2,2,2]7‐octene‐2,5‐dione (1), prepared by oxidative decarboxylation of the dicarboxylic acid (3), shows a relatively intense UV.‐absorption band at 223 mμ (log ε = 3,36), which is ascribed to internal charge transfer. An unusually strong band ( n → π‐transition), characteristic of non‐planar β,γ‐unsaturated ketones and resolved into two peaks at 296 and 307 mp (log ε = 2,41) respectively, is also present.
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