中文摘要：

脲嘧啶类化合物具有显著的除草活性．设计并合成了10个未见文献报道的N-[2，4-二取代-5-（3-甲基-2，6-二氧-4-三氟甲基-1，2，3，6-四氢嘧啶-1-基）苯基]酰亚胺类化合物，其化学结构经^1H NMR，IR，HPLC／MS和元素分析表征．初步生物活性测定结果表明，该类化合物具有一定的除草活性，如9a，9b，9c，9f,9g和9h在有效成分75g／hm^2剂量下，茎叶处理对苘麻（Abutilon theophrasti Medic）、刺苋（Amaranthus spinosus）等双子叶杂草的抑制率达90％以上．

英文摘要：

Uracil compounds have significant herbicidal activity. Ten N-[2,4-disubstituted-5-（3-methy-2,6- dioxo-4-trifluoromethyl-1,2,3,6-tetrahydropyrimidin-1-yl）phenyl]imides were designed and synthesized. Their structures were confirmed by ^1H NMR, IR, HPLC/MS and elemental analysis. Preliminary bioassay showed that most of title compounds had good herbicidal activity, for example, 9a, 9b, 9c, 9f, 9g and 9h exhibited more than 90% inhibition aganist dicotyledon weeds, such as Abutilon theophrasti Medic and Amaranthus spinosus at an active ingredient 75 g/hm^2 in post-emergence treatment.