Heterocycle-Substituted Aromatic Herbicide for Crop Selectivity

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing herbicides, such as substituted biaryl benzenesulfonamide compounds, have limitations in their herbicidal properties against harmful plants and selectivity to crops, leading to issues like weed resistance, service life, and environmental concerns.

Innovation Solution

A heterocycle-substituted aromatic compound with the general formula I, which exhibits excellent herbicidal activity against gramineous weeds and broad-leaf weeds at low application rates while maintaining high selectivity to crops.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If substituted biaryl benzenesulfonamide compounds are used as herbicides, then herbicidal activity against harmful plants is achieved, but selectivity to crops is insufficient and weed resistance develops

Engineering Contradiction:

Improveherbicidal activityVSAvoidselectivity to crops

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the chemical structure of herbicides by changing molecular parameters - specifically introducing heterocyclic rings (pyridine, pyrimidine, triazine) at the para-position of the benzene ring in the biaryl benzenesulfonamide structure. This structural parameter change creates new chemical properties that improve both herbicidal activity and crop selectivity, resolving the contradiction between effective weed control and crop safety

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates composite molecular structures by combining the biaryl benzenesulfonamide core with heterocyclic rings at the para-position. This composite structure integrates the beneficial properties of both structural elements - the sulfonamide group provides herbicidal activity while the heterocyclic ring enhances selectivity and reduces resistance development

Inventive Principle:

Principle #40Composite materials

2Duration of action of stationary object

If existing herbicides are used continuously, then weed control is maintained, but service life decreases and environmental concerns increase

Engineering Contradiction:

Improveservice lifeVSAvoidenvironmental impact

Core Design Contradiction:

Duration of action of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameters of existing herbicides by introducing heterocyclic structures that alter metabolic degradation pathways. This extends the service life of the herbicide in the environment while reducing harmful effects through improved molecular properties that enhance biodegradability and reduce accumulation in non-target organisms

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250066339A1Heterocycle-substituted aromatic compound, method for preparing same, herbicidal composition, and use thereof

Publication Date: 2025.02.27 QINGDAO KINGAGROOT CHEM COMPOUNDS CO LTD

AI summary

The present invention belongs to the technical field of pesticides, and particularly, relates to a heterocycle-substituted aromatic compound, a method for preparing same, a herbicidal composition, and use thereof. The compound is represented by general formula I, wherein Y represents a halogen, a halogenated alkyl, cyano, nitro, or amino; Z represents hydrogen, a halogen, or hydroxyl; M1 and M2 each independently represent CR5 or N(O)m; Q represents CX3X4; R1, R2, R3, R4, and R5 each independently represent hydrogen, a halogen, or the like; X1, X2, X3, and X4 each independently represent hydrogen, a halogen, or the like, and m represents 0 or 1. The compound, even at a low application rate, has excellent herbicidal activity on gramineous weeds, broad-leaf weeds, and the like, and has high selectivity for crops.