2-amino-5-oxyalkylpyrimidine derivatives for selective herbicide control
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Solution Overview
Problem
Existing herbicides based on pyrimidine derivatives often require high application rates, leading to economic inefficiencies and potential damage to useful plants, due to high production costs and limited selectivity in crop protection.
Innovation Solution
Development of specifically substituted 2-amino-5-oxyalkylpyrimidine derivatives that offer improved herbicidal activity and selectivity, allowing for broader spectrum control of harmful plants with reduced economic and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing pyrimidine derivative herbicides are used, then herbicidal action is achieved, but high application rates are required leading to economic inefficiency and potential damage to useful plants
Solution Approach 1:
The patent modifies the chemical structure of pyrimidine derivatives by introducing specific substituents at defined positions (e.g., amino group at position 2, oxyalkyl group at position 5, and specific bicyclic or heterocyclic substituents), which changes the biological activity parameters to achieve higher herbicidal efficacy at lower application rates
Solution Approach 2:
The patent introduces specific local substitutions at particular positions of the pyrimidine ring (e.g., R1, R2, R3, R4, R5, R6 definitions in claim 1), where each position has specific substituent requirements that locally optimize the molecule's interaction with target plant enzymes, thereby improving selectivity and reducing required application rates
2Adaptability or versatility
If existing pyrimidine derivative herbicides are used, then broad spectrum control is achieved, but selectivity for useful plants is reduced
Solution Approach 1:
The patent defines specific substituent patterns at different positions of the pyrimidine ring (e.g., amino at position 2, oxyalkyl at position 5 with specific R1-R6 definitions), where each local substitution is optimized to interact with specific plant metabolic pathways, achieving both broad spectrum activity against weeds and selectivity for useful plants through differential uptake or metabolism
Solution Approach 2:
The patent introduces flexibility in the oxyalkyl group at position 5 (with variable chain lengths and substituents R1-R6) that allows the molecule to dynamically adapt to different plant species' metabolic pathways, maintaining broad spectrum efficacy while preserving selectivity through species-specific activation or degradation patterns
Data Source
AI summary
What are described are compounds of the general formula (I) and agrochemically acceptable salts thereofand their preparation and their use in the crop protection sector.