A fast and efficient solid state method for the chemoselective room temperature oxidative coupling of thiols to afford their corresponding disulfides using inexpensive and readily available moist sodiumperiodate as the reagent is described. The reaction was applicable to a variety of thiols giving high yields after short reaction times. Comparison of yield/time ratios of this method with some of those reported in the literature shows the superiority of this reagent over others under these conditions.
[EN] TRIAZOLE COMPOUND AND USE THEREOF IN AGRICULTURE<br/>[FR] COMPOSÉ DE TRIAZOLE ET SON UTILISATION EN AGRICULTURE
申请人:DONGGUAN HEC PESTICIDES R&D CO LTD
公开号:WO2020063756A1
公开(公告)日:2020-04-02
A novel triazole compound of the formula (IV) is provided, it can be used in agriculture, wherein R1 is cyclopropyl and the like; X is -CH2-and the like; each of R4 and R6 is independently hydrogen, fluorine, chlorine, CH3-, etc.; each of R3 and R7 is hydrogen, fluorine, chlorine, idoine, CH3-, -OCF3, etc.; R5 is hydrogen, fluorine, chlorine, bromine, idoine, -CF3, -OCH2CN, -OCH2CH=CH2, etc.
the original triazole sulfonamide derivatives lead compound. Triazole sulfonamide as a remarkable nitrogen‐containing heterocycliccompound opposed cucumber downy mildew (CDM) develops a quite vital part in the sphere of the study of new farm chemicals. The existing report designs a certain amount of 1,2,4‐triazole‐1,3‐disulfonamide derivatives. Hydrazones have obtained extensive attention in the field
霜霉病是一种非常重要的有害疾病,可导致水果和蔬菜减少。由于耐药性的持续增长,迫切需要从目前的用于控制霜霉病的杀真菌剂中找到功能模式不同的新型杀真菌剂。这项工作是对我们先前对原始三唑磺酰胺衍生物铅化合物的研究的扩展。三唑磺酰胺是一种出色的含氮杂环化合物,可与黄瓜霜霉病(CDM)对抗,在新型农用化学品研究领域中发挥了至关重要的作用。现有报告设计了一定数量的1,2,4-三唑-1,3-二磺酰胺衍生物。dra因其独特的化学结构和出色的活性(杀虫,抗菌,抗真菌和除草剂)。通过将许多与三唑磺酰氯基团偶合,合成了24种新的衍生物。LC-MS的频谱分析1 H NMR和13 C NMR用于表征这些新化合物。与使用生物测定法的商业氰唑胺相比,这些化合物大多数显示出较好的杀真菌活性。此外,化合物8q表现出最大的CDM抗性(EC 50 = 7.776 mg / L)。田间功效试验表明,化合物8q的杀真菌活性高于购买