Synthesis and Herbicidal Evaluation of Novel 3-[(α-Hydroxy-substituted)benzylidene]pyrrolidine-2,4-diones
作者:Youquan Zhu、Xiaomao Zou、Fangzhong Hu、Changsheng Yao、Bin Liu、Huazheng Yang
DOI:10.1021/jf051510l
日期:2005.11.1
aroyl acetates with N-substituted glycine esters. The new compounds were identified by 1H NMR spectroscopy and elemental analyses. Their herbicidal activities were evaluated. Some compounds exhibited excellent herbicidal activities at a dose of 187.5 g/ha. A suitable electron-donating substituent at the 2- and/or 4-position of the phenyl ring was essential for high herbicidal activity, a result that has
通过使不同的芳酰乙酸酯与N-取代的甘氨酸酯反应,合成了一系列3-[((α-羟基-取代的)亚苄基]吡咯烷-2,4-二酮衍生物作为候选除草剂。通过1H NMR光谱和元素分析鉴定了这些新化合物。对它们的除草活性进行了评估。一些化合物在187.5 g / ha的剂量下表现出优异的除草活性。在苯环的2位和/或4位上合适的供电子取代基对于高除草活性是必不可少的,这一结果以前没有报道。还发现标题化合物的结构-活性关系不同于其他类似种类的较早化合物,其结果可能取决于烯醇结构的不同。