Synthesis, crystal structure, and biological evaluation of a novel eight-membered dinitration neonicotinoid analogues
作者:Xiao Zhang、Weiwei Yu、Xiaoyong Xu、Xusheng Shao、Zhong Li
DOI:10.1016/j.bmcl.2021.127960
日期:2021.7
intermediate synthesis, a serendipitous reaction of introducing nitro group from nitromethylene has been observed. Instead of expected dihydroxy compounds, dinitration structures with nitromethylene analogues were prepared under mild conditions by using a metal-free catalyst B(OH)3. In this reaction, the extra nitro group was suggested to be from starting material. Bioassays indicated that compound 3a showed
在二羟基中间体合成的研究中,观察到从硝基亚甲基引入硝基的偶然反应。代替预期的二羟基化合物,使用无金属催化剂 B(OH) 3在温和条件下制备了具有硝基亚甲基类似物的二硝化结构。在该反应中,建议额外的硝基来自起始材料。生物测定表明,化合物3a对豇豆蚜虫(Aphis craccivora)和粘虫(Mythimna separata)表现出良好的杀虫活性,LC 50值分别为4.9 mg/L和7.1 mg/L。