Rearrangement of a 5,7-di-tert-butyl-2-(quinolin-2-yl)-1,3-tropolone into a pentalene derivativeстатья
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Дата последнего поиска статьи во внешних источниках: 3 февраля 2019 г.
Аннотация:Acid-catalyzed rearrangement of 5,7-di-tert-butyl-2-(4-chloro-6,8-dimethylquinolin-2-yl)-1,3-tropolone leads
to (R,S)-5-tert-butyl-2-(4-chloro-6,8-dimethyl-1H-quinolin-2-ylidene)-3,3,3a-trimethyl-3,3a-dihydropentalene-
1,6(2H,6aH)-dione. The structure of the rearrangement product is established by 2D-correlation NMR and
X-ray diffraction. The relative thermodynamic stability and tautomeric isomers of the new compound were
evaluated by means of quantum chemical methods. A reaction mechanism is suggested.