Substituted Pyridone Derivatives for Selective Weed Control
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Solution Overview
Problem
Existing herbicides do not effectively address the need for selective and efficient weed control in agricultural and horticultural settings, particularly in crops of useful plants.
Innovation Solution
Development of novel pyridone derivatives with specific structural features, including various substituents, which exhibit enhanced herbicidal activity when applied as agrochemical compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing herbicides are used for weed control, then weed control activity is achieved, but selective efficiency and effectiveness in crops of useful plants is insufficient
Solution Approach 1:
The patent modifies the chemical structure of pyridone derivatives by changing molecular parameters - introducing specific substituents (aryl groups, heteroaryl groups, alkyl groups) at defined positions (R1-R9) to optimize both herbicidal activity and selective efficiency. This structural parameter optimization allows the herbicide to effectively distinguish between weeds and crops of useful plants.
Solution Approach 2:
The invention creates composite molecular structures by combining pyridone core with various functional groups and substituents (aryl, heteroaryl, alkyl, haloalkyl groups). These composite structures enable the herbicide to achieve both high herbicidal activity and improved selective efficiency through synergistic effects of different molecular components.
2Reliability
If novel pyridone derivatives with specific substituents are developed, then herbicidal activity is enhanced, but structural complexity increases
Solution Approach 1:
The patent divides the complex molecule into segments - a pyridone core structure with specific substituents at defined positions (R1-R9). This segmentation allows systematic variation of functional groups while maintaining the active pyridone core, thereby enhancing herbicidal activity through modular construction rather than creating entirely new complex molecules.
Solution Approach 2:
The pyridone core structure serves as a universal scaffold that can accommodate multiple types of substituents (aryl, heteroaryl, alkyl, haloalkyl groups) at different positions. This multi-functionality allows a single core structure to generate multiple herbicidal compounds with optimized activities, reducing the need to develop entirely new complex molecular frameworks.
Data Source
AI summary
Compounds of Formula (I) wherein the substituents are as defined in claim 1. The invention further relates to herbicidal compositions which comprise a compound of Formula (I) and to the use of compounds of Formula (I) for controlling weeds, in particular in crops of useful plants.