Tri- and difluoromethoxylated N-based heterocycles − Synthesis and insecticidal activity of novel F3CO- and F2HCO-analogues of Imidacloprid and Thiacloprid
作者:Gregory Landelle、Etienne Schmitt、Armen Panossian、Jean-Pierre Vors、Sergiy Pazenok、Peter Jeschke、Oliver Gutbrod、Frédéric R. Leroux
DOI:10.1016/j.jfluchem.2017.08.006
日期:2017.11
The preparation of F3CO- and F2HCO-analogues of Imidacloprid and Thiacloprid and the evaluation of their biological activity have been performed. For this purpose, a first synthetic approach allowed the preparation of a desired F3CO-containing key intermediate. To allow a facile access to the second F2HCO-containing key intermediate, the difluoromethylation of hydroxylated N-based heterocycles has
吡虫啉和噻虫啉的F 3 CO-和F 2 HCO类似物的制备及其生物学活性的评价。为此目的,第一种合成方法允许制备所需的含F 3 CO的关键中间体。为了便于使用第二个含F 2 HCO的关键中间体,羟基化N的二氟甲基化使用二氟甲基三氟甲磺酸酯(一种液态非ODS试剂),在空气中,水性条件下,以非常短的反应时间,开发了基于杂环的杂环。相容性杂环的广泛多样性包括许多取代的羟基吡啶,而且还包括-吡唑,-吡嗪,-哒嗪和-喹啉。使用文献条件成功地实现了两种关键中间体与所需的4,5-二氢-N-硝基-1 H-咪唑-2-胺和[ N(Z)]- N -2-噻唑烷亚叉基-氰胺的偶联。这项工作使有价值的构建基块的制备成为可能,这可能导致发现新的生物活性实体。