Abstract
3,7-Dimethyl-2-undecanol, 3,7,9-trimethyl-2-tridecanol, and 3,7, 11-trimethyl-2-tridecanol were synthesized as racemic mixtures in moderate yields. The alcohols are known precursors of the female sex pheromones of the pine sawfly species Diprion nipponica, Macrodiprion nemoralis, and Microdiprion pallipes, respectively. Stereoisomeric mixtures of 3,8,12-trimethyl-2-tridecanol, erythro-(2R,3R,11R/S)-3,11-dimethyl-2-tetradecanol, 3,5-dimethyl-2-tetradecanol, and 5,7-dimethyl-2-tetradecanol, structurally related to sex pheromone alcohol precursors of pine sawfly species, were also synthesized in moderate yields. The key reaction in the syntheses was the ring opening of γ-butyrolactones by using different alkyl lithiums as nucleophiles.
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Hedenström, E., Andersson, F. Syntheses of Female Sex Pheromone Precursors of Pine Sawfly Species and of Some Structurally Related Methyl-Branched Long-Chain 2-Alkanols. J Chem Ecol 28, 1237–1254 (2002). https://doi.org/10.1023/A:1016289902732
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DOI: https://doi.org/10.1023/A:1016289902732