几不同代替 alkoxycarbonyl 的 2-benzoxazolinone 一半被合并了到 tetrahydroisoindoline-1,3-dione 脚手架提供 25 混合物(1a-1u 和 2a-2d ) 。这些混合物的结构被 1 H 和 13 C NMR, HRMS 和 X 光检查单个水晶的衍射。一些这些混合物(1g, 1h, 1j, 1k ) 对以 375 g AI·ha −1 的率的青麻 theophrasti, Amaranthus retroflexus 和 Echinochloa crus-galli 的展出优秀 herbicidal 活动。在他们之中,混合物 1h 和 1j 分别地与 1.8 和 5.3 g AI·ha −1, 的编辑 50 价值对青麻 theophrasti 显示了最好的出现以后的 herbicidal 效果,它比商业 acifluorfen 的优异(44.3 g AI·ha −1) 。地试用证明复合 1h 展出了类似的 herbicidal 活动到高集中 atrazine,并且发现了比 atrazine 为玉米更安全。这研究的结果因此证明复合 1h 能潜在地为玉米领域被用作出现以后的除草剂。
Several different alkoxycarbonyl-substituted 2-benzoxazolinone moieties have been incorporated into a tetrahy- droisoindoline-1,3-dione scaffold to provide 25 compounds (1a-lu and 2a-2d). The structures of these compounds were confirmed by 1H and 13C NMR, HRMS and X-ray single-crystal diffraction. Some of these compounds (1g, 1h, 1j, 1k) exhibited excellent herbicidal activities against Abutilon theophrasti, Amaranthus retroflexus and Eehinochloa crus-galli at a rate of 375 g AI·ha^-1. Among them, compounds lh and 1j displayed the best post-emergence herbicidal effect against Abutilon theophrasti with ED50 values of 1.8 and 5.3 g AI·ha^-1, respectively, which are superior to that of the commercial acifluorfen (44.3 g AI·ha^-1). Field trials demonstrated that compound lh exhibited similar herbicidal activity to a high concentration atrazine, and found to be safer for maize than atrazine. The results of this study therefore show that compound lh could potentially be used as a post-emergence herbicide for maize fields.