咪唑-1-磺酰基叠氮化物硫酸氢盐被认为是由伯磺酰胺合成磺酰基叠氮化物的有效试剂。所描述的方法在实验上简单且产率高,并且不需要添加铜盐。此外,15 N NMR机理研究表明反应是通过重氮转移机理进行的。就冲击稳定性,成本和易于使用而言,咪唑-1-磺酰基叠氮化物硫酸氢盐与现有的重氮转移试剂相比具有明显的优势。
Copper-Mediated Three-Component Reaction for the Synthesis of <i>N</i>-Acylsulfonamide on DNA
作者:Solji Eom、Taeyeon Kwon、Da Yeon Lee、Chi Hoon Park、Hyun Jin Kim
DOI:10.1021/acs.orglett.2c01675
日期:2022.7.15
The DNA-encoded library (DEL) technology is a new method for discovering hit compounds for target proteins in the pharmaceutical industry. The N-acylsulfonamide functional group has been reported to exhibit various pharmacological activities, and based on this, the demand for a method that allows its introduction into the DEL platform has increased. In this report, a procedure for synthesizing N-acylsulfonamide
DNA 编码文库 (DEL) 技术是一种在制药行业中发现靶蛋白目标化合物的新方法。据报道, N-酰基磺酰胺官能团表现出各种药理活性,基于此,对将其引入 DEL 平台的方法的需求有所增加。在本报告中,在铜试剂和水作为亲核试剂的情况下,开发了一种合成适用于 DEL 构建的N-酰基磺酰胺官能团的方法,该方法来自简单的炔烃或磺酰叠氮化物,这些化合物可广泛购买。此外,我们证明了一种新的替代程序可用于构建 DNA 编码库。
Metal-free transfer hydrogenation/cycloaddition cascade of activated quinolines and isoquinolines with tosyl azides
作者:Suman Yadav、Ruchir Kant、Malleswara Rao Kuram
DOI:10.1039/d3cc01430d
日期:——
difficulty in isolating cyclic enamines emanating from their intrinsic instability has impeded their exploration in cycloaddition reactions. Here, we achieved a metal-free domino reaction providing quinoline and isoquinoline-derived cyclic amidines by the cycloaddition of azides with in situ generated enamines via dearomatization.
A Base‐Free, Low Temperature Click and Release Reaction for the In Situ Generation of Diazomethane
作者:Luke S. Schembri、Esther Olaniran、Marcus Söderström、Bobo Skillinghaug、Luke R. Odell
DOI:10.1002/adsc.202300132
日期:2023.6.13
to the reaction medium. Herein, we present a low temperature and base-free in situ synthesis of diazomethane via a “click and release” reaction between an enamine and sulfonyl azide. Its utility is exemplified by the synthesis of diverse methyl esters in yields of up to 93%. Moreover, diazoketone synthesis from in situ generated diazomethane and acid chlorides was demonstrated for the first time. Finally
Synthesis of Sulfonyl Azides via Diazotransfer using an Imidazole-1-sulfonyl Azide Salt: Scope and <sup>15</sup>N NMR Labeling Experiments
作者:Marc Y. Stevens、Rajiv T. Sawant、Luke R. Odell
DOI:10.1021/jo500553q
日期:2014.6.6
Imidazole-1-sulfonyl azide hydrogen sulfate is presented as an efficient reagent for the synthesis of sulfonyl azides from primary sulfonamides. The described method is experimentally simple and high-yielding and does not require the addition of Cu salts. Furthermore, 15N NMR mechanistic studies show the reaction proceeds via a diazo transfer mechanism. Imidazole-1-sulfonyl azide hydrogen sulfate provides
咪唑-1-磺酰基叠氮化物硫酸氢盐被认为是由伯磺酰胺合成磺酰基叠氮化物的有效试剂。所描述的方法在实验上简单且产率高,并且不需要添加铜盐。此外,15 N NMR机理研究表明反应是通过重氮转移机理进行的。就冲击稳定性,成本和易于使用而言,咪唑-1-磺酰基叠氮化物硫酸氢盐与现有的重氮转移试剂相比具有明显的优势。
Synthesis of N -Sulfonylformamidines by tert -butyl Hydroperoxide–Promoted, metal-free, direct oxidative dehydrogenation of aliphatic amines
A direct and convenient metal-free method to prepare sulfonyl amidines in the presence of aqueous tert-butyl hydroperoxide (T-HYDRO) has been developed. Different tertiary and secondary amines were tested for compatibility with the oxidative conditions and could be coupled with sulfonyl azides to form the corresponding amidines in moderate to good yields.