Metathesis of ethyl oleate, catalyzed by WCl6 and SnMe(4), provided di
ethyl 9-octadecenedioate (the desired starting material for the synthe
sis of civetone) in 99% yield. Dieckmann condensation of diethyl 9-oct
adecenedioate gave 2-ethoxycarbonyl-9-cycloheptadeaenone (63% yield),
the hydrolysis-decarboxylation reaction of which yielded civetone (93%
). Identification of all products was by H-1 nuclear magnetic resonanc
e, infrared and mass spectroscopic data. This is the first report of t
he synthesis of civetone from palm oil-derived products.