Basf Corporation

Cac Shanghai International Trading Co., Ltd.

Chang Sha Jia Qiao Biotech Co., Ltd.

Liang Fang Lv

Jun Jiang

Weiyong Tang

Yun Fei Qi

Yu Lin Qiu

Liangming Luo

Rong Zhang

Chaoqun Huang

Shau Lin Chen

Jintao Zhu

Jueping Ni

Zongcheng Li

Yan Zhu Lei

Jiyong Liu

Juncheng Xiang

Wenjing Ma

Liqi Zhou

Shuang Hou

Provided are m-diamide compounds and a preparation method therefor and the use thereof. The m-diamide compounds have a structure represented by formula I. The m-diamide compounds of the present invention can have a high insecticidal activity at a low dose and take effect rapidly, can exert the insecticidal activity one day after application, can achieve a high insecticidal activity within three days, and have a good fast-acting property; moreover, due to the good effect at a low dose, the m-diamide compounds can reduce the damage to plants and human beings caused by excessive drug concentrations, enable less drug residue to be generated during application which is more conducive to environmental protection, and have broad application prospects.

M-diamide compound and preparation method therefor and use thereof

A catalyst for gasoline engine exhaust gas after-treatment, comprising Pt and optionally at least one other platinum group metal on a hydrothermal stable support material which is coated onto a gasoline particulate filter. The catalyst oxidizes particulate matter trapped in the gasoline particulate filter under low temperature and abates NO, CO and HC. Also a process for preparing the catalyst is disclosed, and a method for after-treatment of gasoline engine exhaust gas using the catalyst is disclosed.

Catalyst for gasoline engine exhaust gas aftertreatment

The present disclosure provides a bromination method for m-diamide compounds comprising reacting a compound represented by formula I with a brominating reagent in the presence of an oxidant to obtain a brominated product represented by formula II. The method adopts a special design of brominating reagents and reaction conditions to introduce a bromine atom at a specific site of the m-diamide compound, with 87.9 to 99.5% yield of a brominated product obtained by the reaction and higher than 91.8% purity. Therefore, the bromination method has a simple route, mild reaction conditions, high efficiency, and does not require complicated and cumbersome post-treatment processes; furthermore, raw materials used for the bromination reaction are readily available, costs of the brominating reagent are low, and the brominated product finally obtained has high yield and high purity, thus the method is a novel one with a broad application prospect.

Bromination method for m-diamide compounds

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Shanghai, China

Liang Fang Lv