Synthesis of 4-Iodoisoquinolin-1(2<i>H</i>)-ones by a Dirhodium(II)-Catalyzed 1,4-Bisfunctionalization of Isoquinolinium Iodide Salts
作者:Zaixiang Fang、Yi Wang、Yuanhua Wang
DOI:10.1021/acs.orglett.8b03614
日期:2019.1.18
An efficient Rh2(II,II)-catalyzed reaction has been developed under mild conditions. This synthetic method proceeds through iodination/oxidation of readily available isoquinolinium iodide salts under aerobic conditions with good to excellent yields. 4-Iodoisoquinolin-1(2H)-ones are important building blocks for biologically and medicinally important compounds. The developed methodology was applied
A copper-mediated cross-coupling approach for the synthesis of 3-heteroaryl quinolone and related analogues
作者:Sanghye Shin、Yechan Kim、Kiho Kim、Sungwoo Hong
DOI:10.1039/c4ob00939h
日期:——
An efficient and practical method for the direct cross-coupling between quinolones and a range of azoles was developed via copper-mediated C–H functionalization. This synthetic strategy provides a convenient access to a variety of C3-heteroaryl quinolones, quinolinone, nalidixic acid, uracil, pyridone and chromone derivatives, which are prominent structural motifs in many biologically active compounds
A general and efficient procedure for p-toluenesulfonic acid-catalyzed iodination of isoquinolin-1(2H)-ones with N-iodosuccinimide at room temperature is described. This method provides an alternative way of constructing C–I bonds, affords various 4-iodoisoquinolin-1(2H)-ones in moderate to good yields, and shows a broad substrate scope and good functional group tolerance.
描述了在室温下对甲苯磺酸催化异喹啉-1(2 H)-酮与 N-碘代琥珀酰亚胺碘化的一般有效程序。该方法提供了另一种构建 C-I 键的方法,以中等至良好的产率提供各种 4-iodoisoquinolin-1(2 H )-one,并显示出广泛的底物范围和良好的官能团耐受性。
Carbonylative Transformations Using a DMAP-Based Pd-Catalyst through Ex Situ CO Generation
作者:Pallabi Halder、Ashif Iqubal、Krishanu Mondal、Narottam Mukhopadhyay、Parthasarathi Das
DOI:10.1021/acs.joc.3c01725
日期:2023.11.3
aminocarbonylation and carbonylative Suzuki–Miyaura coupling has been developed using a novel palladium complex, [PdII(DMAP)2(OAc)2]. The complex was successfully synthesized using a stoichiometric reaction between PdII(OAc)2 and DMAP in acetone at room temperature and characterized using single-crystal X-ray analysis. Only 5 mol % catalyst loading was sufficient for effective carbonylativetransformations. “Chloroform-COware”
使用新型钯配合物[Pd II (DMAP) 2 (OAc) 2 ]开发了一种无膦、高效的氨基羰基化和羰基化Suzuki-Miyaura偶联方案。该复合物是在室温下在丙酮中通过 Pd II (OAc) 2和 DMAP之间的化学计量反应成功合成的,并使用单晶 X 射线分析进行了表征。仅 5 mol% 的催化剂负载量就足以实现有效的羰基化转化。利用“氯仿-COware”化学方法,在两室装置中使用氯仿作为廉价的 CO 源,安全、轻松地插入羰基单元。利用该技术合成了CX-516、CX-546、farampator等多种增值药学相关化合物。此外,商业设计的 COware 被设计为 COware-RB 设置,用于连续一锅合成茚并异喹啉(拓扑异构酶 I 抑制剂)。