Pyrimidinium Compounds for Pest Control and Plant Health
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Solution Overview
Problem
Current pesticidal agents face challenges such as resistance development by pests, limited spectrum of activity, and the need for reduced dosage rates to minimize environmental impact, while also requiring combinations that provide both rapid knock-down and long-lasting control, as well as improved plant health and yield.
Innovation Solution
Development of pyrimidinium compounds and their mixtures with other active ingredients, which offer broad-spectrum activity, enhanced efficacy, and improved resistance management, combined with plant health benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing pesticidal agents are used, then pest control is achieved, but pests develop resistance reducing effectiveness
Solution Approach 1:
The patent combines pyrimidinium compound (I) with at least one further active ingredient from groups A-N to create synergistic mixtures. This combination approach allows the compounds to work together to achieve enhanced pest control while managing resistance development, as the multi-target action makes it harder for pests to develop resistance to all components simultaneously.
Solution Approach 2:
The invention creates composite pesticidal formulations containing pyrimidinium compound (I) combined with multiple active ingredients from different chemical groups (A-N). These composite formulations provide broad-spectrum activity and prolonged control by targeting multiple physiological pathways in pests, thereby extending the duration of effective pest control.
2Reliability
If higher dosage rates are used, then pesticidal activity is improved, but environmental impact increases
Solution Approach 1:
The patent utilizes synergistic interactions between pyrimidinium compound (I) and further active ingredients to achieve enhanced pesticidal activity at reduced dosage rates. The synergistic effect allows lower concentrations of each individual compound to work together more effectively, maintaining high pesticidal activity while reducing the total amount of active ingredients applied and thereby minimizing environmental impact.
3Adaptability or versatility
If single active ingredients are used, then application is simple, but spectrum of activity is limited
Solution Approach 1:
The patent creates multi-functional pesticidal compositions where pyrimidinium compound (I) serves as a core active ingredient that can be combined with various further active ingredients from groups A-N to target different types of invertebrate pests. This universal approach allows a single base compound to provide broad-spectrum activity when paired with appropriate complementary ingredients, covering a wide range of pest species and life stages.
4Speed
If rapid knock-down action is prioritized, then immediate pest control is achieved, but long-lasting control is reduced
Solution Approach 1:
The patent combines pyrimidinium compound (I) with further active ingredients that have complementary modes of action and different persistence profiles. This combination allows the formulation to deliver both rapid knock-down effects and prolonged residual control, as the different compounds work together to provide immediate pest mortality while maintaining long-term protective activity.
Data Source
AI summary
The present invention relates to pyrimidinium compounds of formula (1), to the stereoisomers, salts, tautomers and N-oxides thereof, their mixtures and to compositions comprising such compounds or mixtures. The invention also relates to methods and uses of these pyrimidinium compounds and of compositions thereof, for combating and controlling animal pests. Furthermore, the invention relates also to pesticidal methods of applying such substituted pyrimidinium compounds.The pyrimidinium compounds of the present invention are defined by the following general formula (I):wherein R1, R2 and Het are defined as in the description.