Substituted Fungicidal Amides for Broad-Spectrum Crop Protection
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Solution Overview
Problem
Existing amides with fungicidal activity are unsatisfactory against various phytopathogenic fungi of important agricultural crops and often exhibit phytotoxicity.
Innovation Solution
Development of amides with specific substituents that broaden the spectrum of action against phytopathogenic fungi without causing phytotoxicity, represented by compounds with a specific general formula (I) incorporating various functional groups and heterocyclic structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing amides with fungicidal activity are used, then some fungicidal effect is achieved, but the spectrum of action is limited and phytotoxicity occurs
Solution Approach 1:
The patent modifies the chemical structure of amide compounds by changing parameters such as substituting hydrogen atoms at specific positions (R1, R2, R3, R4) with various functional groups (halogen atoms, cyano groups, carboxyl groups, hydroxyl groups, amino groups, etc.). This systematic parameter change broadens the spectrum of action against phytopathogenic fungi while maintaining or improving biocidal activity and reducing phytotoxicity effects on crops.
2Reliability
If existing amides with fungicidal activity are used, then some control effect is achieved, but effectiveness against various phytopathogenic fungi is unsatisfactory
Solution Approach 1:
The patent creates a series of amide compounds with diverse functional groups that can effectively target multiple types of phytopathogenic fungi. The general formula (I) with variable substituents at different positions provides a universal structure that can adapt to different fungal pathogens, achieving broad-spectrum effectiveness without requiring separate compounds for each pathogen type.
Data Source
AI summary
Compounds having general formula (I) with a high fungicidal activity are described, and their use for the control of phytopathogenic fungi of important agricultural crops.