An elemental sulfur atom donor strategy for constructing a thiophene-fused thiazole bis-S-heterocyclic skeletonviaCu-catalyzed three-component tandem cyclization has been developed.
一种通过铜催化的三组分串联环化反应构建噻吩-螺噻唑双硫杂环骨架的元素硫原子给体策略已经被开发。
Functionalization of C–H bonds in acetophenone oximes with arylacetic acids and elemental sulfur
作者:Phuc H. Pham、Khang X. Nguyen、Hoai T. B. Pham、Thien T. Tran、Tung T. Nguyen、Nam T. S. Phan
DOI:10.1039/d0ra00808g
日期:——
coupling of acetophenone ketoximes, arylacetic acids, and elemental sulfur in the presence of Li2CO3 base. Functionalities including chloro, bromo, fluoro, trifluoromethyl, and pyridyl groups were compatible with reaction conditions. High yields and excellent regioselectivities were obtained even if meta-substituted ketoxime acetates were used. Ethyl esters of heteroarylacetic acids were competent substrates
在 Li 2 CO 3碱存在下,通过苯乙酮肟、芳基乙酸和元素硫的偶联合成稠合噻吩并[3,2- d ]噻唑。包括氯、溴、氟、三氟甲基和吡啶基在内的官能团与反应条件相容。即使使用间位取代的酮肟乙酸盐,也可以获得高产率和优异的区域选择性。杂芳基乙酸的乙酯是有效的底物,这在文献中非常罕见。我们的方法将提供一个方便的协议,从简单的底物提供多杂环结构。
The Use of Chloroformamidine Hydrochloride as a Reagent for the Synthesis of Guanidines from Electron Deficient Aromatic Amines
作者:Ian Armitage、Mingkun Fu、Frederick Hicks、Adiseshu Kattuboina、Jennifer S. N. Li、Ashley McCarron、Lei Zhu
DOI:10.1002/jhet.2567
日期:2017.1
compound, a clean, efficient approach to guanidine synthesis using chloroformamidine hydrochloride was identified. To investigate the general utility of this methodology towards electron‐deficient aromatic amines, a set of favorable conditions were developed from a series of screens, and the scope of the reaction was probed. The successful application of this chemistry to a variety of pyridines, anilines
Binding and Transport Properties of a Benzo[
<i>b</i>
]thiophene‐Based Mono‐(thio)urea Library
作者:Cristina Moiteiro、Igor Marques、William G. Ryder、Vasco Cachatra、Sílvia Carvalho、Li‐Jun Chen、Brian J. Goodfellow、Philip A. Gale、Vítor Félix
DOI:10.1002/ejoc.202101484
日期:2022.1.21
with benzo[b]thiophene-based motifs as Lego bricks, an extensive library of small drug-like synthetic receptors was designed. Their anion binding and transmembrane transportproperties were investigated by a combination of experimental and theoretical approaches. The most active transporters recognize chloride using an urea assisted by a C−H binding unit from a single β- or γ-benzo[b]thiophene motif
将基于苯并[ b ]噻吩的基序用作乐高积木,设计了一个广泛的小型药物样合成受体库。通过实验和理论方法的结合研究了它们的阴离子结合和跨膜转运特性。最活跃的转运蛋白使用尿素识别氯化物,该尿素由来自单个 β-或 γ-苯并[ b ]噻吩基序的 C-H 结合单元辅助。
Novel pyrazolothienopyridinones as potential GABAA receptor modulators
作者:Blanca Angelica Vega Alanis、Laurin Wimmer、Margot Ernst、Michael Schnürch、Marko D. Mihovilovic
DOI:10.1007/s00706-023-03063-6
日期:2023.12
The synthesis of novel pyrazolothienopyridinone derivatives as potential GABAA receptormodulators was performed and is herein described. A crucial step of the synthesis involving handling unstable aminothiophenes was managed via two different synthetic strategies delivering a set of 8 target compounds. Graphical abstract