Simple, scalable and cost-efficient synthesis of the bronze birch borer kairomone (5S, 7S)-Conophthorin

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Date

2025-03

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University of New Brunswick

Abstract

Due to the increased usage of birch trees throughout North America, there has been a significant increase in bronze birch borer (Agrilus anxius) infestations. Although there are solutions to deal with these infestations, only a very limited number of approaches to proactively prevent them exist. (5S,7S)-7-Methyl-1,6-dioxaspiro[4.5]decane (5S,7S-conophthorin) has been identified as a kairomone which can attract the insect to the susceptible trees. This kairomone is emitted by birch trees and serves as a beacon to the bronze birch borer. These susceptible birch trees mainly include those which have been damaged or weakened. Traps placed on these trees using the kairomone as bait have proven to be effective. Although the compound has been synthesized using multiple routes, none are viable methods to produce the compound in a cost-efficient nor scalable manner which is the objective of this devised route.

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