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- W2064394942 abstract "Furanophan (3) wird in wäßriger Ameisensäure langsam zuerst an einem Ring zum Diketon 4 und dann am zweiten Ring zum Cyclododecatetraon 6 geöffnet, welches rasch unter intramolekularer CC-Verknüpfung wieder cyclisiert. Dabei wird 1-Hydroxybicyclo[6.4.0]-dodecan-4.7,10-trion (7) zum Hauptprodukt, und dieses unterliegt einem zweiten Ringschluß zur Titelverbindung 8, deren Struktur durch Röntgenanalyse ermittelt wird. 8 besitzt C2-Symmetrie und ein 1,6-äthano-überbrücktes cis-Decalingerüst, in dem alle drei Cyclohexanringe eine etwas verdrillte Sesselkonformation einnehmen. Asteranes, XI. 1,4-Dihydroxytricyclo[6.4.0.04,9]dodecane-7, 10-dione from Furanophane In aqueous formic acid furanophane (3) is hydrolysed slowly first to the diketone 4 and than further, at the second furane ring, to give cyclododecatetraone 6 which undergoes fast intramolecular recyclisations. 1-Hydroxybicyclo[6.4.0]dodecane-4,7,10-trione (7) is the main product in this process, and reacts by a second ring closure yielding the title compound 8, the structure of which was elucidated by X-ray analysis. 8 has C2 symmetry and a 1,6-ethanobridged cis-decalin system with all three cyclohexane units in slightly twisted chair conformations." @default.
- W2064394942 created "2016-06-24" @default.
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- W2064394942 date "1974-10-01" @default.
- W2064394942 modified "2023-09-27" @default.
- W2064394942 title "Asterane, XI. 1,4-Dihydroxytricyclo[6.4.0.04,9]dodecan-7,10-dion aus Furanophan" @default.
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- W2064394942 doi "https://doi.org/10.1002/cber.19741071002" @default.
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