Asymmetric heterocyclic ring substituent urea compound and preparation method and application thereof

Abstract

The invention relates to an asymmetric heterocyclic ring substituent urea compound and a preparation method and application thereof. The compound is a compound or a non-toxic salt thereof with a structure shown in the formula I, wherein R1 is selected from halogen, nitryl, cyan, hydroxyl, ester group, carboxyl, trifluoromethyl, alkyl, alkoxyl, aryl, heteroaryl, aryloxy, acyl, acyloxy or heterocyclic radical; and R2 is selected from alkyl, aryl, heteroaryl or cluste aryl. The asymmetric heterocyclic ring substituent urea compound has the characteristics of weeding activity, sterilizing activity and plant growth adjusting activity; and the preparation method is safe and non-toxic.

Description

technical field The invention relates to an unsymmetrical heterocyclic substituted urea compound, its preparation method and application. Background technique Unsymmetrical heterocyclic substituted urea compounds are extremely useful and important fine chemicals and chemical raw materials, and can be widely used as herbicides, insecticides, plant growth regulators and pharmaceutical intermediates. Due to the differently substituted peptide bonds (-CO-NH-) in the structure, most of them are biologically active, and the asymmetric urea unit is a common structural feature of many enzyme inhibitors and biomimetic peptides. The traditional method for the synthesis of unsymmetrically substituted ureas is the phosgene or phosgene-based isocyanate method. Because isocyanate is unstable, it is not easy to store, and highly toxic phosgene is used, so the production is extremely unsafe. Therefore, it is of great significance to study the synthesis of urea compounds, especially asymme...

AI Technical Summary

Problems solved by technology

Another object of the present invention is to overcome the shortcomings of unsafe production in the existing synthetic method of asymmetric substituted urea, and provide a safe and stable synthetic method of asymmetric substituted urea

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