Pyrazole Herbicidal Compounds for Selective Weed Control
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Solution Overview
Problem
Existing herbicidal pyrazole compounds lack improved properties for effective weed control in crops, particularly in terms of selectivity and efficacy.
Innovation Solution
Development of novel herbicidal pyrazole compounds of Formula (I) with specific substituents and agronomically acceptable salts, formulated into herbicidal compositions with various adjuvants for enhanced weed control, including formulations like EC, SC, WG, WP, and ME, and used in combination with other herbicides, fungicides, and safeners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing herbicidal pyrazole compounds are used, then weed control is achieved, but selectivity and efficacy are insufficient
Solution Approach 1:
The patent applies local quality by introducing specific substituent groups at defined positions (R1, R2, R3) on the pyrazole ring structure. Each position has specific chemical groups (e.g., halogen, cyano, carbonyl, alkoxy) that provide localized chemical functionality to enhance weed control efficacy while maintaining crop safety. This structured modification allows precise control over the herbicide's biological activity profile.
Solution Approach 2:
The patent employs parameter changes by systematically varying chemical parameters (substituent types, positions, and combinations) on the pyrazole core structure. By changing these molecular parameters, the compound achieves improved selectivity and efficacy indices compared to existing compounds, while maintaining acceptable safety profiles for crop plants.
2Reliability
If novel pyrazole compounds with specific substituents are synthesized, then selectivity and efficacy are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the synthesis process into discrete steps: (1) preparation of the pyrazole core structure, (2) introduction of substituent groups at specific positions, and (3) formulation into herbicidal compositions. This modular approach allows each step to be optimized independently and facilitates scalable manufacturing of the novel compounds with improved selectivity.
3Adaptability or versatility
If multiple herbicidal compositions with different formulations are developed, then application flexibility is improved, but formulation complexity increases
Solution Approach 1:
The patent applies universality by developing a core pyrazole compound that can be formulated into multiple herbicidal composition types (EC, SC, WG, WP, ME) and applied to different crop types and weed species. This multi-functional approach allows the same active ingredient to serve various agricultural purposes, enhancing application flexibility while managing formulation complexity through standardized preparation methods.
Data Source
AI summary
The present disclosure relates to compounds of Formula (I), or an agronomically acceptable salt thereof, wherein Q, R1 and R2 are as defined herein. The present disclosure further relates to herbicidal compositions which comprise a compound of Formula (I) and to use of the compounds of Formula (I) for controlling weeds, in particular in crops of useful plants.