Malonic Acid Herbicides With Low-Rate Selective Weed Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing herbicides suffer from insufficient herbicidal activity, particularly at low application rates, unsatisfactory selectivity, and toxicity for humans and animals, as well as poor compatibility with crop plants.
Innovation Solution
The use of malonic acid monoamides and malonamide esters, specifically compounds of formula (I), which include various substituents and stereoisomers, to combat unwanted vegetation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing herbicides are used to control unwanted vegetation, then herbicidal activity is achieved, but the activity is insufficient particularly at low application rates
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of malonic acid derivatives through systematic variation of substituents (R1-R6) at different positions. This structural parameter optimization enables the compounds to achieve high herbicidal activity even at reduced application rates, directly resolving the contradiction between reliability of herbicidal activity and quantity of substance required.
2Reliability
If existing herbicides are used to control unwanted vegetation, then herbicidal activity is achieved, but selectivity is unsatisfactory resulting in low compatibility with crop plants
Solution Approach 1:
The patent implements local quality by introducing specific substituent patterns at different positions (R1-R6) of the malonic acid derivative core structure. Each position can be independently optimized with specific functional groups to enhance selectivity - making the herbicide more effective against unwanted vegetation while being compatible with crop plants, thus resolving the contradiction between herbicidal activity and selectivity.
3Reliability
If existing herbicides are used to control unwanted vegetation, then herbicidal activity is achieved, but toxicity for humans and animals is present
Solution Approach 1:
The patent reduces toxicity through parameter changes by selecting and combining specific substituent types (halogen, alkyl, alkoxy, cyano, nitro groups) at defined positions on the malonic acid derivative structure. These structural modifications maintain herbicidal efficacy while lowering toxicity to humans and animals, resolving the contradiction between reliable herbicidal activity and safety concerns.
Data Source
AI summary
The present invention relates to the use of malonic acid monoamides and malonamide esters of the formula (I)wherein the variables are as defined in the claims and the description, for controlling unwanted vegetation, to a method for combatting unwanted vegetation by using such compounds, to compositions comprising such compounds and to certain malonic acid monoamides and malonamide esters of the formula (I).