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Terpenes and Terpene Derivatives, XVI. - Biomimetic Cyclization of 2-(3-Butenyl)-3,4-dimethyl-2-cyclohexen-1-ol
Gottschalk, Franz-Josef,Marschall-Weyerstahl, Helga,Weyerstahl, Peter
, p. 462 - 467 (2007/10/02)
Starting from the butenyl derivative 7a of Hagemann's ester by methylation (->7b, 8a), saponification (->7c), and reduction a mixture of cyclohexenols 1a/b could be obtained.Cationic cyclization with formic acid at room temperature as well as with trifluo
