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。
Direct CHamidation of arylphosphoryl compounds has been developed by using an IrIII catalyst system under mild conditions. A wide range of substrates could be employed with high functional‐group tolerance. This procedure was successfully applied for the first time to the asymmetric reaction giving rise to a P‐chirogenic center with a high diastereomeric ratio of up to 19:1 (90 % de).
amides can be efficiently prepared by an unconventional approach of the hydrative reaction between terminalalkynes, sulfonyl azides, and water in the presence of copper catalyst and amine base under very mild conditions. The present route is quite general, and a wide range of alkynes and sulfonyl azides are readily coupled catalytically with water to furnish amides in high yields. A variety of labile
We report the direct amidation of arene C-H bonds using sulfonyl azides as the amino source to release N(2) as the single byproduct. The reaction is catalyzed by a cationic rhodium complex under external oxidant-free conditions in the atmospheric environment. A broad range of chelate group-containing arenes are selectively amidated with excellent functional group tolerance, thus opening a new avenue
Regioselective Introduction of Heteroatoms at the C-8 Position of Quinoline <i>N</i>-Oxides: Remote C–H Activation Using <i>N</i>-Oxide as a Stepping Stone
Reported herein is the metal-catalyzed regioselective C-H functionalization of quinoline N-oxides at the 8-position: direct iodination and amidation were developed using rhodium and iridium catalytic systems, respectively. Mechanistic study of the amidation revealed that the unique regioselectivity is achieved through the smooth formation of N-oxide-chelated iridacycle and that an acid additive plays
Direct CH Amidation of Benzoic Acids to Introduce<i>meta</i>- and<i>para</i>-Amino Groups by Tandem Decarboxylation
作者:Donggun Lee、Sukbok Chang
DOI:10.1002/chem.201500331
日期:2015.3.27
The Ir‐catalyzed mild CH amidation of benzoicacids with sulfonyl azides was developed to give reactions with high efficiency and functional‐group compatibility. Subsequent protodecarboxylation of ortho‐amidated benzoicacid products afforded meta‐ or para‐substituted (N‐sulfonyl)aniline derivatives, the latter being inaccessible by other CH functionalization approaches. The decarboxylation step