Tropon (1) ist Edukt eines praparativ brauchbaren Zugangs in die Reihe der C-2-funktionalisierten syn-1 ,4-Tropilidendioxide (3, 6, 7). Nach hochselektiver HOCI-Addition an das syn-l,4-Tropondioxid 3 (80 -85% 6 P.7a-Chlorhydrin 2la) und (unselektiver) Reduktion gelingt iiber den 2a-Alkohol 358 der Einstieg in die Reihe der C-8-funktionalisierten anti,anti-Tropilidentrioxide (19, 33, 36).Functionalised Dioxides (syn-1,4) and Trioxides (anti,anti) of Tropilidene Tropone (1) is the starting material of a preparatively useful access to C-2 functionalised syn-1,4-tropilidene dioxides (3,6,7). Upon highly selective HOCl addition to the syn-l,4-tropone dioxide 3 (80-85% 6P.7u-chlorohydrin 21a) and an unselective reduction step an entry is opened via the 2a-alcohol 35 a to the C-8-functionalised anti,anli-tropilidene trioxides (19, 33, 36).
Im Rahmen des in der vorstehenden
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