Benzoxazinone Herbicidal Composition with Halogen Substitution
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Solution Overview
Problem
Current herbicidal compositions are not highly active against unwanted vegetation and lack compatibility with crop plants, resulting in unsatisfactory performance in controlling harmful plants while minimizing damage to useful plants.
Innovation Solution
A herbicidal composition comprising a benzoxazinone of a specific formula combined with a safener, which together provide enhanced activity against harmful plants while maintaining compatibility with crop plants, utilizing a broad spectrum of activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If herbicidal compositions use known compounds with unsubstituted benzo[1,4]oxazine rings, then they show some herbicidal action, but their activity against harmful plants and compatibility with crop plants are not satisfactory
Solution Approach 1:
The patent applies parameter changes by substituting at least one halogen atom at the 2-position of the benzo[1,4]oxazine ring, transforming the chemical structure from unsubstituted to substituted. This structural modification fundamentally changes the herbicidal properties, achieving both high activity against harmful plants and good compatibility with crop plants, thereby resolving the unsatisfactory performance of known compounds
Solution Approach 2:
The patent creates a composite herbicidal composition by combining the substituted benzoxazinone compounds with safeners. This composite approach enhances both the herbicidal activity against harmful plants and the compatibility with crop plants, as the safener component protects the crop plants while the substituted benzoxazinone provides effective weed control
2Reliability
If herbicidal compositions aim to increase specificity and reliability of action, then better crop plant compatibility is achieved, but the activity against harmful plants may be reduced
Solution Approach 1:
The patent resolves this contradiction through parameter changes in the molecular structure - specifically introducing halogen substitution at the 2-position of the benzo[1,4]oxazine ring. This structural modification optimizes the compound's properties to simultaneously achieve high specificity for harmful plants and high reliability for crop plant compatibility, breaking the traditional trade-off between these two parameters
Data Source
AI summary
The present invention relates to a herbicidal composition comprising:A) at least one benzoxazinone compound of the formula Iwherein the variables are as defined as given in the specification;and a safener of formula II as defined in the specification.