Synthesis and structure–Activity relationships of M2-Selective muscarinic receptor ligands in the 1-[4-(4-Arylsulfonyl)-phenylmethyl]-4-(4-piperidinyl)-piperazine family
摘要:
The synthesis and muscarinic binding properties of compounds based on the 1-[4-(4-arylsulfonyl)phenylmethyl]-4-(1aroyl-4-piperidinyl)-piperazine skeleton are described. For Compounds. substituted with appropriately configured methyl groups at the benzylic center and at the piperazine 2-position. high levels of selective, M-2 subtype affinity could be obtained. particularly when the terminal N-aroyl residue was ortho-substituted. (C) 2002 Elsevier Science Ltd. All rights reserved.
Arenesulfonyl Fluoride Synthesis via Copper-Catalyzed Fluorosulfonylation of Arenediazonium Salts
作者:Yongan Liu、Donghai Yu、Yong Guo、Ji-Chang Xiao、Qing-Yun Chen、Chao Liu
DOI:10.1021/acs.orglett.0c00484
日期:2020.3.20
We report herein a general and practical copper-catalyzed fluorosulfonylation reaction of a wide range of abundant arenediazonium salts to smoothly prepare various arenesulfonylfluorides using the 1,4-diazabicyclo[2.2.2]octane-bis(sulfur dioxide) adduct as a convenient sulfonyl source in combination with KHF2 as an ideal fluorine source and without the need for additional oxidants. Interestingly,
the three-component reaction of arenediazonium tetrafluoroborates, Na2S2O5, and N-fluorobenzenesulfonimide (NFSI). The reaction proceeds through a radical tandem process, affording various arenesulfonylfluorides in moderate to high yields. This protocol not only provides a complement to the previous fluorosulfonylation reactions, but also extends the applications of Sandmeyer reaction.
通过四氟硼酸壬二唑鎓,Na 2 S 2 O 5和N-氟苯磺酰亚胺(NFSI)的三组分反应,实现了无过渡金属的Sandmeyer型氟磺酰化反应。该反应通过自由基串联过程进行,以中等至高产率提供各种芳烃磺酰氟。该方案不仅为以前的氟磺酰化反应提供了补充,而且扩展了桑德迈尔反应的应用。
Visible‐Light‐Mediated Synthesis of Sulfonyl Fluorides from Arylazo Sulfones
作者:Tien Tan Bui、Van Hieu Tran、Hee‐Kwon Kim
DOI:10.1002/adsc.202100951
日期:2022.1.18
Sulfonyl fluorides are useful motifs for a wide range of applications in organic synthesis including sulfur (VI) fluoride exchange-based “click chemistry.” Herein, a visible-light-mediated synthesis of sulfonyl fluoridesfrom arylazo sulfones is described. In the present study, K2S2O5 and N-fluorobenzenesulfonimide (NFSI) were used as the sulfonyl source and fluorinating agent, respectively, for v
磺酰氟是有机合成中广泛应用的有用基序,包括基于硫 (VI) 氟化物交换的“点击化学”。本文描述了一种由芳基砜合成磺酰氟的可见光介导合成方法。在本研究中,K 2 S 2 O 5和N-氟苯磺酰亚胺 (NFSI) 分别用作磺酰源和氟化剂,用于可见光介导的芳基砜的氟磺酰化,制备 60-85% 的各种磺酰氟。屈服。该协议是一种合成方法,可在室温下提供有用的磺酰氟结构。
Scalable, Chemoselective Nickel Electrocatalytic Sulfinylation of Aryl Halides with SO
<sub>2</sub>
作者:Terry Shing‐Bong Lou、Yu Kawamata、Tamara Ewing、Guillermo A. Correa‐Otero、Michael R. Collins、Phil S. Baran
DOI:10.1002/anie.202208080
日期:2022.9.12
electrochemistry, the conversion of arylhalides to sulfinates using an inexpensive Ni catalyst at room temperature is reported. The use of SO2 stock solution at controlled concentration represents a convenient sulfur source. The sulfinate intermediates can be derivatized into sulfonyl fluorides, sulfonamide, and sulfone in a one-pot fashion. This reaction exhibits a broadsubstratescope and can be easily scaled
Selective Fluorosulfonylation of Thianthrenium Salts Enabled by Electrochemistry
作者:Xianqiang Kong、Yiyi Chen、Qianwen Liu、WenJie Wang、Shuangquan Zhang、Qian Zhang、Xiaohui Chen、Yuan-Qing Xu、Zhong-Yan Cao
DOI:10.1021/acs.orglett.2c03956
日期:2023.2.3
A practical electrochemically driven method for fluorosulfonylation of both aryl and alkyl thianthrenium salts has been disclosed. The strategy does not need external redox reagents or metal catalysts. In combination with C–Hthianthrenation of aromatics, this method provides a new tool for the site-selective fluorosulfonylation of drugs.