Fluorazame compound with herbicidal activity and preparation method thereof

A technology of fenflufen and a compound, which is applied to fenflufen with herbicidal activity and the field of preparation thereof, can solve problems such as unsatisfactory control effect, and achieve environmental friendliness, high yield and good purity Effect

Active Publication Date: 2015-11-18
JINTAN XINDE AGRI SCI & TECH COMPANY
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Problems solved by technology

[0002] At the end of the 1980s, the pyrimidine salicylic acid herbicide was first discovered and developed by Japan Combination Chemicals, the first commercialized bispyribac-sodium (Bispyribac-sodium) (CN1035292A), and then South Korea LG Chemical Company developed pyrimidine Pyribenzoxim (EP658549A1), the Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences and Zhejiang Chemical Technology Group Co., Ltd. jointly developed propylfen and isopropylfen (CN112793C), but these compounds are harmful to barnyardgrass in rice fields The control effect of weeds such as grass, red-legged barnyardgrass, two-eared paspalum, and rice barnyardgrass is not ideal

Method used

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  • Fluorazame compound with herbicidal activity and preparation method thereof
  • Fluorazame compound with herbicidal activity and preparation method thereof
  • Fluorazame compound with herbicidal activity and preparation method thereof

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Embodiment Construction

[0120] Below in conjunction with specific embodiment, the present invention is further described in detail:

[0121] The to-be-prepared herbicide containing trifluoromethylbenzene-trifluoromethyl benzene-containing fluramiflub compound with high herbicidal activity is represented by the general formula (I):

[0122]

[0123] R=o,m,p-CF3

[0124] Wherein R is a substituted compound of o-, m-, p-trifluoromethylbenzene.

[0125] There are three structures of fluramifluzed compounds:

[0126] Fluorumazepam A: O-[2,6-bis(4,6-dimethoxypyrimidinyl-2-yloxy)benzoyl](2-trifluoromethyl)benzaldehyde oxime;

[0127] Fluoxaflub B: O-[2,6-bis(4,6-dimethoxypyrimidinyl-2-yloxy)benzoyl](3-trifluoromethyl)benzaldehyde oxime;

[0128] Fluorumazepam C: O-[2,6-bis(4,6-dimethoxypyrimidinyl-2-yloxy)benzoyl](4-trifluoromethyl)benzaldehyde oxime;

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Abstract

Disclosed are a fluorine pyribenzoxim compound with herbicidal activity and a preparation method therefor. The fluorine pyribenzoxim compound is O-[2,6-bis(4,6-dimethoxy-2-pyrimidinyl)oxygroup]benzoylphenyl(2-trifluoromethyl) formaldoxime, O-[2,6-bis(4,6-dimethoxy-2-pyrimidinyl)oxygroup]benzoylphenyl(3-trifluoromethyl) formaldoxime, or O-[2,6-bis(4,6-dimethoxy-2-pyrimidinyl)oxygroup]benzoylphenyl(4-trifluoromethyl) formaldoxime. The preparation method therefor uses trifluoromethyl-substituted formaldoxime and 2,6-bis(4,6-dimethoxy-2-pyrimidinyl-2-oxygroup) benzoic acid as the raw materials. The fluorine pyribenzoxim compound can achieve a control effect over 94% on barnyard grass, junglerice, and paspalum distichum in the paddy field, brings high safety to rice plants, and is environmentally friendly and low-toxic.

Description

Technical field: [0001] The present invention relates to a novel compound with herbicidal activity and a preparation method thereof, in particular to a flumeflub-like compound with herbicidal activity and a preparation method thereof. Background technique: [0002] At the end of the 1980s, the pyrimidine salicylic acid herbicide was first discovered and developed by Japan Combination Chemicals, the first commercialized bispyribac-sodium (Bispyribac-sodium) (CN1035292A), and then South Korea LG Chemical Company developed pyrimidine Pyribenzoxim (EP658549A1), the Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences and Zhejiang Chemical Technology Group Co., Ltd. jointly developed propylfen and isopropylfen (CN112793C), but these compounds are harmful to barnyardgrass in rice fields Grass, red-legged barnyardgrass, paspalum, rice barnyard and other weeds control effect is not ideal. [0003] In order to develop a herbicide that can effectively control barnyard...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D239/60A01N43/54A01P13/00
CPCA01N43/54C07D239/60
Inventor 李国富于俊祥徐德锋
Owner JINTAN XINDE AGRI SCI & TECH COMPANY
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