Herbicidal Picolinates and Pyrimidine Carboxylates for Selective Weed Control
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Solution Overview
Problem
Current chemical herbicides lack a broader spectrum of weed control, selectivity, minimal crop damage, storage stability, ease of handling, and effectiveness against herbicide-tolerant weeds.
Innovation Solution
Development of compounds of Formula (I), which include specific structural elements allowing for the creation of herbicidally effective substances that can be used to control undesirable vegetation by contacting the weeds or pre-emergently applying them to soil or water, along with their agriculturally acceptable salts and derivatives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current chemical herbicides are used, then weed control is achieved, but the spectrum of weed control is limited and herbicide tolerance develops
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of herbicides through specific substitutions at defined positions in the molecular framework. This structural parameter modification creates novel compounds with improved spectral activity against diverse weed species while reducing the development of herbicide tolerance through mechanism-based differentiation from existing herbicides.
Solution Approach 2:
The patent employs composite material principles by creating hybrid molecular structures that combine specific structural elements in defined positions. These composite molecular architectures integrate multiple functional groups and substitution patterns that work synergistically to achieve broad-spectrum weed control while maintaining selectivity and reducing tolerance development.
2Productivity
If chemical herbicides are used, then weed control is achieved, but crop damage occurs
Solution Approach 1:
The patent applies local quality principles by introducing specific substitutions at defined positions in the herbicide molecular structure. These localized structural modifications create regions of differential activity that enhance weed control effectiveness while reducing phytotoxicity to crops, achieving selective action through targeted molecular design.
Solution Approach 2:
The patent utilizes parameter changes by systematically varying specific structural parameters at defined positions to optimize the balance between weed control effectiveness and crop safety. This parameter optimization creates compounds with enhanced selectivity profiles that maintain productivity while minimizing harmful effects on crops.
3Adaptability or versatility
If new herbicide compounds are developed, then broader spectrum and selectivity are improved, but compound complexity increases
Solution Approach 1:
The patent applies segmentation principles by dividing the herbicide molecular structure into distinct functional segments with specific substitutions at defined positions. This segmented approach allows for systematic optimization of selectivity properties while maintaining a manageable level of overall structural complexity through modular design.
Data Source
AI summary
4-amino-6-(pyridyl and 2-substitutedphenyl)-picolinic acids and their derivatives; 6-amino-2-(pyridyl and 2-substitutedphenyl)-pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.