Malonamide Herbicide Composition for Low-Rate Selective Weed Control
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Solution Overview
Problem
Existing herbicides based on malonamide compounds suffer from insufficient herbicidal activity, particularly at low application rates, and unsatisfactory selectivity, leading to compatibility issues with crop plants and potential toxicity to humans and animals.
Innovation Solution
Development of malonamide compounds of formula (I) with specific substituents and their agriculturally acceptable salts, esters, or thioesters, which exhibit high herbicidal activity, low toxicity, and high compatibility with crop plants, along with broad activity against various unwanted plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If current malonamide compounds are used for controlling unwanted vegetation, then herbicidal activity is achieved, but the activity is insufficient at low application rates
Solution Approach 1:
The patent applies parameter changes by systematically modifying the chemical structure of malonamide compounds through various substitutions at different positions (R1-R6 groups). These structural parameter changes enhance the herbicidal activity of the compounds, allowing effective control of unwanted vegetation at lower application rates while maintaining selectivity and reduced toxicity.
2Reliability
If current malonamide compounds are used for controlling unwanted vegetation, then herbicidal activity is achieved, but selectivity is unsatisfactory resulting in low compatibility with crop plants
Solution Approach 1:
The patent applies local quality by introducing specific substituent groups at particular positions on the malonamide molecular structure. Different R groups (R1-R6) provide localized functional modifications that enhance selectivity, allowing the compound to differentiate between unwanted vegetation and crop plants, thereby improving compatibility while maintaining herbicidal activity.
3Reliability
If current malonamide compounds are used for controlling unwanted vegetation, then herbicidal activity is achieved, but toxicity to humans and animals is higher
Solution Approach 1:
The patent applies parameter changes by modifying the molecular parameters of malonamide compounds through systematic substitution patterns. These changes optimize the balance between herbicidal activity and safety, reducing toxicity to humans and animals while preserving effective herbicidal action against unwanted vegetation.
Data Source
AI summary
The invention relates to compounds of formula (I), and their use as herbicides. In said formula, R1 to R9 represent groups such as hydrogen, halogen or organic groups such as alkyl, alkenyl, alkynyl, or alkoxy; X is a bond or a divalent unit; Y is hydrogen, cyano, hydroxyl or a linear or cyclic organic group. The invention further refers to a composition comprising such compound and to the use thereof for controlling unwanted vegetation.