7-oxa-3,4-diazabicyclo[4.1.0]hept-4-en-2-one herbicide
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Solution Overview
Problem
Herbicides require effective weed control with minimal phytotoxicity to crops and environmental safety, as existing compounds often have high doses and environmental persistence issues.
Innovation Solution
A 7-oxa-3,4-diazabicyclo[4.1.0]hept-4-en-2-one compound is developed as an active ingredient, which provides reliable weed control at low doses, has reduced phytotoxicity to crops, and is environmentally safe, formulated into a herbicide for agricultural and horticultural use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing herbicide compounds are used to control weeds, then weed control effect is achieved, but phytotoxicity to crops increases and environmental safety deteriorates
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of herbicide compounds through specific substitution patterns on the pyridazinone core (introducing electron-withdrawing groups like halogens, nitro, or cyano groups at positions 4 or 5). This structural parameter modification optimizes the balance between herbicidal activity and crop safety, reducing phytotoxicity while maintaining effective weed control at lower application doses.
2Reliability
If existing herbicide compounds are used to control weeds, then weed control effect is achieved, but environmental persistence increases and environmental safety deteriorates
Solution Approach 1:
The patent modifies molecular parameters of herbicide compounds by introducing specific functional groups and substitution patterns that reduce environmental persistence. The use of heteroatoms (oxygen, nitrogen) in the pyridazinone ring system and appropriate substituent selection creates compounds that maintain herbicidal efficacy while being more readily degraded in the environment, thus reducing long-term persistence and environmental accumulation.
3Reliability
If high doses of herbicides are used to control weeds, then weed control effect is improved, but phytotoxicity to crops increases and environmental safety deteriorates
Solution Approach 1:
The patent achieves enhanced herbicidal activity at lower doses through parameter changes in molecular structure. The specific substitution patterns on the pyridazinone core (electron-withdrawing groups at positions 4 or 5, various R1-R6 substituents) increase the potency and metabolic stability of the compounds, allowing effective weed control at reduced application rates, thereby minimizing crop phytotoxicity and environmental impact.
Data Source
AI summary
A compound represented by a formula (I) or a salt thereof, and a herbicide containing at least one selected from them as an active ingredient: wherein R1 represents a substituted or unsubstituted C1-6 alkyl group or the like, R2 represents a substituted or unsubstituted C1-6 alkyl group or the like, R3 represents a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group or the like, and Q represents a substituted or unsubstituted phenyl group or the like.