摘要 合成了一系列O-取代的三氟atrolactamide衍生物,并通过1H NMR、13C NMR、19F NMR、HRMS和X射线衍射分析对其进行了充分表征。对这些化合物的杀真菌活性进行了评价,结果表明,其中一些化合物对白粉病和稻瘟病菌表现出有效的体外杀真菌活性。使用密度泛函理论计算研究了它们的结构-性能关系。这些化合物之一的 X 射线晶体结构采用具有以下晶胞参数的单斜空间群:a = 24.285 (13) A, b = 9.006 (5) A, c = 9.794 (5) A, β = 92.110 (9)o, V = 2140.6 (19) A3 和 Z = 4。这些实验结果与理论值的比较表明两组数据之间有很好的一致性。
Novel Ultrasound-Promoted Parallel Synthesis of Trifluoroatrolactamide Library via a One-Pot Passerini/Hydrolysis Reaction Sequence and Their Fungicidal Activities
摘要:
An ultrasound-promoted one-pot Passerini/hydrolysis reaction sequence has been developed for the synthesis of trifluoroatrolactamide derivatives using a diverse range of trifluoroacetophenones and isonitriles in acetic acid. Parallel synthesis in a centrifuge tube using a noncontact ultrasonic cell crusher was used in this study as an efficient method for the rapid generation of combinatorial trifluoroatrolactamide libraries, and subsequent biochemical evaluation of the resulting compounds indicated that they possessed excellent broad-spectrum fungicidal activities. N-(4-chlorophenyl)-2-(4-ethylphenyl)-3,3,3-trifluoro-2-hydroxypropanamide and N-(4-chlorophenyl)-3,3,3-trifluoro-2-hydroxy-2-(4-methoxyphenyl)propanamide, in particular, showed significant fungicidal activities against all of the fungal species tested in the current study.
A facile, efficient and environmentally-friendly protocol for the synthesis of α-acyloxy amides has been developed by ultrasound-promoted sterically congested Passerini reactions under solvent-free conditions. This method provides several advantages over current reaction methodologies including a simpler work-up procedure, shorter reaction times and higher yields.
extensively in the synthesis of natural products and biologically active substances. A facile and efficient protocol has been developed for the synthesis of a series of new 5-methylenemorpholin-3-one derivatives, which are exocyclic enamides, based on the reactions of trifluoroatrolactamides with propargyl bromide in the presence of sodium hydride. The biological evaluation of these compounds showed that