A mild and efficient copper-catalyzed N-arylation of unprotected sulfonimidamides using boronic acids
摘要:
An efficient and low cost copper catalyzed system for N-arylation of sulfonimidamides has been developed. The reaction proceeds at room temperature under base free conditions. Various N-aryl, N-heteroaryl, and N-cyclopropyl sulfonimidamides were obtained in good to excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.
Copper‐Catalyzed Transsulfinamidation of Sulfinamides as a Key Step in the Preparation of Sulfonamides and Sulfonimidamides
作者:Hao Yu、Zhen Li、Carsten Bolm
DOI:10.1002/anie.201810548
日期:2018.11.19
sulfinamides are prepared by copper‐catalyzed transsulfinamidation of primary sulfinamides with O‐benzoyl hydroxylamines. Subsequent oxidations of the resulting products lead to the corresponding sulfonamides. Treatment of N‐aryl sulfinamides with O‐benzoyl hydroxylamines under copper catalysis provides N‐aryl sulfonimidamides.
products are reported. To gain further insight into the properties of sulfonimidamides relevant to medicinal chemistry, a variety of structurally diverse reaction products were tested in selected in vitro assays. The described N‐functionalization reactions provide a short and efficient approach to structurally diverse sulfonimidamides which have been the subject of recent, growing interest in the life
通过叔 =NH 磺酰亚胺2 aa的各种 N 官能化反应,制备了一组前所未有的结构多样的磺酰亚胺(47 种化合物)。模型化合物2 aa的这些 N 官能化反应包括芳基化、烷基化、三氟甲基化、氰化、磺酰化、烷氧基羰基化(氨基甲酸酯形成)和氨基羰基化(脲形成)。报道了所选 N 功能化产物的小分子 X 射线分析。为了进一步了解磺酰亚胺与药物化学相关的特性,在选定的体外测定中测试了各种结构多样的反应产物。所描述的N-官能化反应为结构多样的磺酰亚胺酰胺提供了一种简短而有效的方法,这已成为生命科学领域最近日益增长的兴趣的主题。
N-Arylation of primary and tertiary sulfonimidamides (SIAs) with benzyne precursors under transition metal-free conditions
作者:Srinivas Ambala、Kimberleigh B. Govender、Kamal K. Rajbongshi、Thavendran Govender、Hendrik G. Kruger、Tricia Naicker、Per I. Arvidsson
DOI:10.1016/j.tetlet.2023.154583
日期:2023.7
Herein, we report an effective and efficient transition metal-free method wherein benzyne intermediates from silyl aryl triflates were successfully coupled with primary sulfonimidamides. The use of CsF in ACN proved to be the optimal condition for the N-arylation of various substituted primary sulfonimidamides, resulting in good to excellent yields. Further, the addition of 18-crown-6 to the present
An efficient and low cost copper catalyzed system for N-arylation of sulfonimidamides has been developed. The reaction proceeds at room temperature under base free conditions. Various N-aryl, N-heteroaryl, and N-cyclopropyl sulfonimidamides were obtained in good to excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.