Synthesis and herbicidal activity of α-[(substituted phenoxybutyryloxy or valeryoxy)]alkylphosphonates and 2-(substituted phenoxybutyryloxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one containing fluorine
作者:Wei Wang、Yuan Zhou、Hao Peng、Hong-Wu He、Xing-Tao Lu
DOI:10.1016/j.jfluchem.2016.11.008
日期:2017.1
modification of the lead compound I, three series of novel fluorine-containing phosphonates derivatives (II, III and IV) were designed and synthesized. Their post-emergence herbicidal activities against some species of weeds were evaluated in a green house. The compounds II were synthesized by introducing of two methylene into the structure I. Compared with the commercial herbicidal clacyfos, compounds II showed
基于我们对先导化合物I的结构修饰的先前工作,设计并合成了三组新型的含氟膦酸酯衍生物(II,III和IV)。在温室中评估了它们对某些杂草的出苗后除草活性。通过将两种亚甲基引入结构I来合成化合物II。与市售除草剂消旋杀虫剂相比,化合物Ⅱ显示出中等的除草活性,对青菜b虫(Abutilon theophrasti),普通mar菜(Amaranthus retroflexus)和白食(白色)的抑制作用为60-85%。旱莲草(Eclipta prostrate)的速率为150 g ai / ha。通过引入具有显着除草活性的开链膦酸酯来设计化合物III。尤其是,化合物III-1 – III-4,III – 6,III – 8,III – 11和III – 12与clacyfos相比,对所有测试的阔叶杂草表现出显着的除草活性(80–100%),而化合物IV具有五个碳原子的羧酸链对所有测试的杂草均无活性。结