title: Design, synthesis, and herbicidal activity of novel substituted 3-(pyridin-2-yl)benzenesulfonamide derivatives.
abstract: A series of novel substituted 3-(pyridin-2-yl)benzenesulfonamide derivatives were designed and synthesized using 2-phenylpridines as the lead compound by intermediate derivatization methods in an attempt to obtain novel compound candidates for weed control. The herbicidal activity assay in glasshouse tests showed several compounds (II6, II7, II8, II9, II10, II11, III2, III3, III4, and III5) could efficiently control velvet leaf, youth-and-old age, barnyard grass, and foxtail at the 37.5 g/ha active substance. Especially, the activities of II6, II7, III2, and III4 were proved roughly equivalent to the saflufenacil and better than 95% sulcotrione at the same concentration. The result of the herbicidal activity assay in field tests demonstrated that II7 at 60 g/ha active substance could give the same effect as bentazon at 1440 g/ha active substance to control dayflower and nightshade, meanwhile II7 showed better activity than oxyfluorfen to control arrowhead and security to rice. The present work indicates that II7 may be a novel compound candidate for potential herbicide.
authors.affiliation: State Key Laboratory of the Discovery and Development of Novel Pesticide, Shenyang Research Institute of Chemical Industry Co. Ltd., Shenyang 110021, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Xie
authors.forename: Hui-Wei
authors.initials: HW
authors.lastname: Chi
authors.forename: Ai-Ying
authors.initials: AY
authors.lastname: Guan
authors.forename: Chang-Ling
authors.initials: CL
authors.lastname: Liu
authors.forename: Hong-Juan
authors.initials: HJ
authors.lastname: Ma
authors.forename: Dong-Liang
authors.initials: DL
authors.lastname: Cui
mesh_terms: D015195:Drug Design; D031747:Echinochloa / Q000187:drug effects; D006540:Herbicides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D013449:Sulfonamides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000096926:Benzenesulfonamides
chemical_list: D006540:Herbicides; D013449:Sulfonamides; D000096926:Benzenesulfonamides
keywords: herbicide; intermediate derivatization methods; substituted 3-(pyridin-2-yl)benzenesulfonamide compounds