Synthesis and Herbicidal Activity of 2-(Substituted phenoxyacetoxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one
作者:Wei Wang、Hong-Wu He、Na Zuo、Hai-Feng He、Hao Peng、Xiao-Song Tan
DOI:10.1021/jf301829m
日期:2012.8.8
exhibited significant postemergence herbicidal activity against Abutilon theophrasti, Brassica juncea, Amaranthus retroflexus, and Eclipta prostrate at a dosage of 150 g ai/ha. Structure–activity relationship analyses indicated that the introduction of a phosphorus-containing heterocyclic ring had a favorable effect on herbicidal activity, and their herbicidal activity could be further increased by a reasonable
在先前对烷基膦酸酯I进行修饰的工作的基础上,设计并合成了一系列2-(取代的苯氧基乙酰氧基)烷基-5,5-二甲基-1,3,2-二氧杂膦烷-2-酮IIa - s,并且它们的结构通过1 H NMR,31 P NMR,13 C NMR,IR,MS和元素分析证实。在温室中评估了它们对7种杂草的除草活性。的标题的一部分化合物如IIA -克,IIK,IIO,和IIR表现出显著苗后除草活性对苘麻,芥菜,,菜和旱莲at的剂量为150 g ai / ha。结构-活性关系分析表明,引入含磷杂环对除草活性具有良好的作用,并且通过在母体结构II中合理组合X,Y和R可以进一步提高其除草活性。可以发现标题化合物IIa 2-[((2,4-二氯苯氧基)乙酰氧基](甲基)甲基-5,5-二甲基-1,3,2-二氧杂膦-2--2-酮和IIr2-[(4-氯-2-甲基-苯氧基)乙酰氧基](甲基)甲基-5,5-二甲基-1,3,2-二氧杂