Iridium-Catalyzed Direct Arene C–H Bond Amidation with Sulfonyl- and Aryl Azides
作者:Donggun Lee、Youngchan Kim、Sukbok Chang
DOI:10.1021/jo4019683
日期:2013.11.1
Iridium-catalyzed direct ortho C-H amidation of arenes has been shown to work well with sulfonyl- and aryl azides as the nitrogen source. The reaction proceeds efficiently with a broad range of substrates bearing conventional directing groups with excellent functional group compatibility under mild conditions. In addition, substrates forming not only 5- but also 6-membered iridacycle intermediates undergo the C-H amidation with high selectivity.
Iridium-catalyzed <i>ortho</i>-selective carbon–hydrogen amidation of benzamides with sulfonyl azides in ionic liquid
An efficient and convenient iridium(III) catalyzed ortho-C–H bond amidation of weakly coordinating benzamides treated with readily available sulfonyl azides as the amino source has been described. In this transformation, ionic liquids represents an ideal reaction medium, giving rise to a broad range of amidation products under mild conditions in the open air. This protocol offers moderate to excellent
已经描述了用容易获得的磺酰叠氮化物作为氨基源处理的弱配位苯甲酰胺的有效且方便的铱( III )催化邻-C-H键酰胺化。在这种转变中,离子液体代表了一种理想的反应介质,在温和的露天条件下可产生多种酰胺化产物。该协议提供中等至优异的化学产量、独特的区域选择性和良好的官能团耐受性。
Substrate‐controlled chemoselective synthesis of 1‐sulfonylquinazoline‐2,4(1H,3H)‐diones and 2‐sulfonamidobenzonitriles
作者:Ping Zhao、Qingle Zeng
DOI:10.1002/jhet.4726
日期:2023.11
diversity-oriented, substrate-controlled, chemoselective syntheticmethod for a variety of structurally diverse 1-sulfonylquinazoline-2,4(1H,3H)-diones and 2-sulfonamidobenzonitriles. This substrate-controlled synthesis is accomplished through the condensation reaction of 2-(sulfonamido)benzamides with or without an N-methyl group on the amides. The reactions are fulfilled within half an hour at room temperature