99722-82-4Relevant academic research and scientific papers
Discovery of ortho-Alkoxy Substituted Novel Sulfonylurea Compounds That Display Strong Herbicidal Activity against Monocotyledon Grasses
Wang, Hai-Lian,Li, Hao-Ran,Zhang, Yi-Chi,Yang, Wen-Tao,Yao, Zheng,Wu, Ren-Jun,Niu, Cong-Wei,Li, Yong-Hong,Wang, Jian-Guo
, p. 8415 - 8427 (2021/08/03)
In the present study, we have designed and synthesized a series of 42 novel sulfonylurea compounds with ortho-alkoxy substitutions at the phenyl ring and evaluated their herbicidal activities. Some target compounds showed excellent herbicidal activity against monocotyledon weed species. When applied at 7.5 g ha-1, 6-11 exhibited more potent herbicidal activity against barnyard grass (Echinochloa crus-galli) and crab grass (Digitaria sanguinalis) than commercial acetohydroxyacid synthase (AHAS; EC 2.2.1.6) inhibitors triasulfuron, penoxsulam, and nicosulfuron at both pre-emergence and postemergence conditions. 6-11 was safe for peanut for postemergence application at this ultralow dosage, suggesting that it could be considered a potential herbicide candidate for peanut fields. Although 6-11 and triasulfuron share similar chemical structures and have close Ki values for plant AHAS, a significant difference has been observed between their LUMO maps from DFT calculations, which might be a possible factor that leads to their different behaviors toward monocotyledon weed species.
N-Phenylsulfonyl-N'-triazinylureas
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, (2008/06/13)
N-Phenylsulfonyl-N'-triazinylureas of the general formula STR1 and the salts thereof with amines, alkali metal or alkaline earth metal bases or with quaternary ammonium bases, have good pre- and postemergence selective herbicidal and growth regulating properties. In the above formula Q is fluorine, fluoromethyl, chloromethyl, trichloromethyl, 1,2-dichloroethyl, 1,2-dibromoethyl, 1,2-dichloropropyl, 1,2-dibromopropyl, 1,2-dibromoisobutyl, 1,2-dichloro-1-methyl-ethyl or 1,2-dibromo-1-methyl-ethyl, X is oxygen, sulfur, a sulfinyl or sulfonyl bridge, Z is oxygen or sulfur, R2 is hydrogen, halogen, C1 -C5 alkyl, C2 -C5 alkenyl, C1 -C4 haloalkyl, or a radical --Y--R5, --COOR6, --NO2 or --CO--NR7 --R8, R3 and R4, each independently of the other, are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, C1 -C4 alkylthio, C1 -C4 haloalkyl, halogen or alkoxyalkyl of at most 4 carbon atoms, R5 and R6, each independently of the other, are C1 -C5 alkyl, C2 -C5 alkenyl or C2 -C6 alkynyl, R7 and R8, each independently of the other, are hydrogen, C1 -C5 alkyl, C2 -C5 alkenyl or C2 -C6 alkynyl, and Y is oxygen, sulfur, a sulfinyl or sulfonyl bridge.
