Substituted 2-C-Azines for Broad-Spectrum Selective Weed Control
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Solution Overview
Problem
Existing herbicides face issues such as insufficient herbicidal activity, narrow spectrum of controlled harmful plants, low selectivity in crops, toxicologically unfavorable profiles, economic production challenges, and environmental dependency, particularly affecting crop yields and compatibility with crop plants.
Innovation Solution
Development of substituted 2-C-azines and their salts, which are designed to address these issues by providing enhanced herbicidal activity, broader spectrum, improved selectivity, and better compatibility with crops, while being economically viable and less dependent on environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If known herbicides are used for selective control of harmful plants, then herbicidal activity is achieved, but the spectrum of controlled harmful plants is not wide enough
Solution Approach 1:
The patent develops substituted 2-C-azines that function as broad-spectrum herbicides effective against multiple types of harmful plants including broad-leaved weeds and grasses. The chemical structure is designed to target multiple weed species simultaneously, making a single compound serve multiple herbicidal functions rather than requiring separate herbicides for different weed types.
Solution Approach 2:
The patent modifies the chemical structure parameters of 2-C-azine derivatives by substituting different groups at various positions (R1-R6 substituents) to optimize herbicidal activity across different weed species. By systematically varying structural parameters such as substituent types and positions, the herbicide achieves enhanced effectiveness against a broader spectrum of harmful plants while maintaining reliable herbicidal action.
2Reliability
If known herbicides are applied, then herbicidal action is achieved, but selectivity in crops of useful plants is too low
Solution Approach 1:
The patent introduces specific substituent patterns at localized positions on the 2-C-azine core structure (such as R4, R5, R6 positions) to create regions of differentiated chemical activity. These localized structural modifications enhance the herbicide's ability to discriminate between weed and crop plants, allowing selective action against harmful plants while sparing useful crops through targeted molecular recognition.
Solution Approach 2:
The patent optimizes selectivity by systematically adjusting structural parameters including the type and position of substituents on the 2-C-azine ring system. By changing parameters such as introducing electron-withdrawing or electron-donating groups at specific positions, the herbicide's affinity for weed versus crop plants is fine-tuned, achieving high selectivity while maintaining effective herbicidal action against target weeds.
3Reliability
If known active ingredients are used, then herbicidal control is achieved, but toxicologically unfavorable profiles are obtained
Solution Approach 1:
The patent modifies the toxicological profile by changing chemical structure parameters of the 2-C-azine derivatives. By selecting biologically favorable substituents (such as fluorine, chlorine, or alkoxy groups at specific positions) and optimizing molecular weight and lipophilicity parameters, the herbicide achieves effective weed control while reducing toxicity to non-target organisms and improving environmental safety compared to conventional herbicides.
4Reliability
If known herbicides are applied, then weed control is achieved, but activity is too highly dependent on environmental conditions
Solution Approach 1:
The patent enhances environmental stability by optimizing chemical parameters of the 2-C-azine structure, including introducing substituents that resist degradation (such as fluorinated or chlorinated groups) and adjusting solubility and volatility parameters. These modifications enable the herbicide to maintain consistent activity across varying environmental conditions such as temperature, humidity, and soil type, reducing the sensitivity to environmental factors that plagues conventional herbicides.
Data Source
AI summary
Substituted 2-C-azines of the general formula (I) are described,and the use thereof as herbicides, in particular for controlling broad-leaved weeds and/or weed grasses in crops of useful plants and/or as plant growth regulators for influencing the growth of crops of useful plants.The present invention further relates to herbicidal and/or plant growth-regulating compositions comprising one or more compounds of the general formula (I).