Garland chrysanthemum extract compounds, and synthesis method and application thereof

Abstract

The invention relates to garland chrysanthemum extract compounds, and a synthesis method and application thereof. The compounds have enol ether-spiro ketal-acetals and unsaturated side chains. The garland chrysanthemum extract compounds have the following structural formula, wherein the exocyclic double bond can be cis or trans exocyclic double bond; Ar is a C2-14 unsaturated alkyl group; and R1 is a methyl group or C2-14 unsaturated alkyl group. The method for synthesizing the compounds is simple and suitable for industrial production; and the compounds have obvious activity of insect antifeedant.

Description

technical field The invention relates to chrysanthemum chrysanthemum compounds; in particular, it relates to chrysanthemum chrysanthemum compounds and their synthesis method and application. The compound has enol ether-spiro ketal-acetal and unsaturated side chain spiro compound, and its synthesis method uses Lewis acid as a catalyst, and the compound is used as the synthesis application of insect antifeedant active pesticide. Background technique According to relevant statistics, the annual investment in pesticide chemistry in the world exceeds four billion U.S. dollars, and more than half of the cost is used for pesticides. However, about 15% of crops are still lost due to pests and diseases every year. The resulting impact is particularly severe in developing countries. The contradiction between the growth of the world's population and the shortage of food is becoming more and more prominent. How to prevent pests and diseases and increase the yield of crops is an urgent ...

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Problems solved by technology

However, because the synthesis of the intermediate-furandiol compound in this method must be obtained through the reaction of lithium reagents, the cost is too high and it is difficult to industrialized production

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