Central China Normal University

Xiaosong Tan

Hao Peng

Hongwu He

Fang Wang

Wei Wang

Na Zuo

Xijun Sheng

Junbo He

Xiaoguo Wang

A substituted phenoxyethyl(isopropyl)acyloxyalkyl phosphonate having phosphorusheterocyclic ring and having herbicidal activity, with a general formula of I, wherein R represents 5,5-dimethyl-1,3,2-dioxaphosphorinan-2-one-2-yl, or 1-oxo-1-phospha-2,6,7-trioxabicyclo[2,2,2]octan-4-yl, or 1-sulfo-1-phospha-2,6,7-trioxabicyclo 2,6,7-trioxabicyclo[2,2,2]octan-4-yl; Rrepresents H, C1-C4 alkyl, phenyl, furyl, pyridyl, or phenyl substituted with methyl, methoxyl, nitro or chloro; Rrepresents H, methyl, and methyl only if R in the general formula I is 1-sulfo-1-phospha-2,6,7-trioxabicyclo[2,2,2]octan-4-yl as phosphorusheterocyclic ring; X and Y represent H, halogen, C1-C4 alkyl or trifluoromethyl, and X and Y are the same or different. The compounds according to the present invention may be used as active component of dicotyledonous broadleaf weed herbicides.

Substituted phenoxyethyl (isopropyl) acyloxyalkyl phosphonate comprising phosphorusheterocyclic ring and having herbicidal activity, and preparation therefor

Disclosed is a derivative of 2-methyl-4-amino-5-(substituted-1H-1,2,3-triazol)methylpyrimidine of general formula I and microbicidal activity thereof. In the formula, R1 represents hydrogen, I; X represents O or NH; Y represents phenyl of substituted phenyl, benzoyl or substituted benzoyl, phenyloxyacetyl or substituted phenyloxyacetyl; the substituents on the phenyl rings which Y involves are: H, halogen, nitro, cyano, CF3, C1&#x2dc;4 alkyl, methoxyl, C1&#x2dc;2 carboxyl or carboxylic ester groups; any position of phenyl rings can be mono- or multi-substituted by identical or different substituents. The compound has a significant inhibition effect on cucumber bacterial angular leaf spot, tomato bacterial leaf spot, cucumber brown blot, cucumber downy mildew, rice sheath blight,andand it can be used as an effective ingredient of microbicides.

Preparation of 2-methyl-4-amino-5(substituted-1H-1,2,3-triazolyl)methylpyrimidine derivatives and microbicidal activity thereof

Growing community of inventors

Hubei, China

Xiaosong Tan