Derivatives containing 2, 5-substituted heterocyclic radical sulphone and synthesis method and application thereof

Abstract

The invention relates to derivatives containing 2, 5- substituted heterocyclic radical sulphone and a synthesis method and application thereof, and provides compounds which can prevent soil-borne diseases and diseases caused by migration, namely the derivatives containing 2, 5-substituted heterocyclic radical sulphone. The derivatives can be expressed by the following general expression shown in the specification, wherein the Z, X and R are defined in the specification. Parts of the compounds have good inhibition activity for the soil-borne diseases, the diseases caused by migration and otherfungus diseases. When the drug concentration reaches 50ppm, the inhibition ratio of a compound I-5 for fusarium graminearum, fusarium oxysporum f.sp.capsicum and cytospora mandshurica is 100%, 99.9% and 100% respectively, thus showing a preferable activity in preventing plant diseases.

Description

technical field

[0001] The invention relates to chemical industry and pesticide, and the specific technology is a kind of sulfone derivatives and its synthesis method and application. Background technique

[0002] Chitin, also known as chitin, is a homogeneous polysaccharide polymerized by N-acetyl-D-glucosamine, which is widely found in insects, crustacean hard shells, fungal cell walls and some green algae but not in plants and vertebrates substances in. Chitin is the main component of the cell wall of most fungi (Ascomycetes, Basidiomycetes and Deuteromycetes), and it constitutes 3% to 60% of the mass of the cell wall. It is in the innermost layer of the cell wall of filamentous fungi, near the plasma membrane, and is radial . Chitin is closely related to the growth of fungal hyphae, and is the main component of the tip extension of fungal hyphae. Chitin is regulated by chitin synthase and chitinase, and chitin synthase is responsible for the growth of chitin. The synt...

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