Tetrahedron p. 8249 - 8252 (1999)
Update date:2022-08-05
Topics:
Bykov, Victor I.
Butenko, Tamara A.
Petrova, Elena B.
Finkelshtein, Eugene Sh.
A novel syntheses of Z-5-dezenol, Z-5-decenyl acetate, Z-7-dodecenol, Z- 7-dodecenyl acetate, Z-9-tricosene, Z-7,8-epoxy-methyloctadecane which are sex pheromone components of Lepidoptera and Diptera orders, have been realized via stereoselective cometathesis of 1,5-cyclooctadiene with ethylene in the presence of MoCls/SiO2-SnMe4 as a key reaction. The male cometathesis product, 1,Z-5,9-decatriene, has been converted into pheromone components monocloned above by regioselective partial hydroboration or hydrozirconation with help of 9-BBN and Cp2ZrHCl, correspondingly. The protonolysis of the obtained zirconosene derivative gave 1,Z-5-decadiene. Hydroboration-oxidation or hydroboration-C2-homologation of the latter but to Z-5- or Z-7 monoene pheromone components. Hydroboration-iodination of terminal double bond in 1,Z-5,9-decatriene, and further cross-coupling of the obtained iodine derivative with convenient lithium cuprates resulted in Z-9- tricosene, the main sex pheromone component of House Fly (Musca Domestica), or in 2-methyl-Z-7-octadecene, the presence of Gypsy Moth (Lymantria Dispar) sex attractant.
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