Synthetic method of triene insect sex attractant

Abstract

The invention discloses a synthetic method of a triolefin insect sex attractant. The synthetic method comprises the steps of (1) enabling alpha-ethyl linolenate to react with absolute ether to generate alpha-linoleny alcohol under catalytic action of LiAlH4; (2) enabling the alpha-linoleny alcohol to react with phosphorus tribromide to generate cis, cis, cis-1-bromine-9,12,15-gadusene in the presence of an organic solvent with weak polarity; and (3) enabling the cis, cis, cis-1-bromine-9,12,15-gadusene to react with a grignard reagent to generate cis, cis, cis-3,6,9-Cn triene under the effects of tetrahydrofuran, lithium tetrachlorocuprate and N-methyl pyrrolidone. By adopting the synthetic method of the triolefin insect sex attractant disclosed by the invention, an insect in-vivo biosynthetic pathway is simulated; polyene hydrocarbon information sex pheromone components of C19, C20 and C21 are synthesized by taking cheap and available alpha-ethyl linolenate as the material; and the synthetic method is short in technologic process, mild in synthetic reaction condition, short in reaction time, high in yield, simple and convenient to operate, wide in application range, low in cost, fewer in three wastes, little in environmental pollution, and easy to industrialize, and the product can be easily separated.

Description

technical field [0001] The invention relates to a synthesis method of an insect sex attractant, in particular to a synthesis method of a triene insect sex attractant. Background technique [0002] Insect pests are one of the important problems restricting agricultural production, often causing large-scale crop production reduction or even failure, resulting in serious economic losses. With the progress of society and the widespread concern of humans on healthy food safety, pest control strategies are increasingly developing in the direction of pest management (SPM), ecological management (EPM), and sustainable management (SPM). In the process of agricultural production, new and pollution-free pest control technologies are gradually replacing traditional chemical control, and are playing an increasingly important role in integrated pest control. [0003] The use of artificially synthesized attractants to trap and kill insects is an efficient, non-toxic and non-polluting new ...

AI Technical Summary

Problems solved by technology

[0005] At present, a variety of sex attractants have been synthesized by artificial synthesis and have been commercialized, but the second type of sex pheromones is more difficult to synthesize. There have been many reports on the chemical synthesis of epoxy olefin sex pheromones, but three There are very few literature reports on the chemical synthesis of olefinic sex pheromones

At present, the synthesis method of triene sex pheromone compounds is difficult to obtain products, and at the same time, there are different shortcomings such as expensive raw materials, low yield, toxic solvents, cumbersome operations, and the need to separate intermediate products.