A copper mediated sulfur–nitrogen coupling reaction for the synthesis of benzo[d]isothiazol-3(2H)-ones and related sulfur–nitrogen heterocycles has been presented, which requires 2-halo-arylamides, sulfur powder, 25–50 mol % of copper iodide/1,10-phenanthroline, and potassium carbonate as base.
提出了铜介导的硫-氮偶联反应,用于合成苯并[ d ]异噻唑-3(2 H)-酮和相关的硫-氮杂环,该反应需要2-卤代芳基酰胺,硫粉,25-50摩尔%的碘化铜/ 1,10-菲咯啉和碳酸钾作为碱。
Reactions of 3H-1,2-benzodithiol-3-one 1-oxide with amines and anilines
作者:Woongki Kim、Jeffrey Dannaldson、Kent S. Gates
DOI:10.1016/0040-4039(96)01124-0
日期:1996.7
Reaction of 3H-1,2-benzodithiol-3-one 1-oxide with primary amines or anilines provides reasonable yields (40–70%) of the corresponding 1,2-benzisothiazolin-3(2H)-ones. These reactions may have relevance to the biological chemistry of 1,2-dithiolan-3-one 1-oxides and also offer a new method for the preparation of certain 1,2-benzisothiazolin-3(2H)-ones.
3 H -1,2-苯二硫基-3-酮1-氧化物与伯胺或苯胺的反应可提供适当的产率(40-70%)的相应1,2-苯并噻唑啉-3(2 H)-酮。这些反应可能与1,2-二硫代噻吩-3-酮1-氧化物的生物化学有关,也为某些1,2-苯并噻唑并唑啉-3(2 H)-酮的制备提供了新的方法。
Electrochemical synthesis for benzisothiazol-3(2H)-ones by dehydrogenative N S bond formation
Herein, we report an electrochemical method for the synthesis of benzisothiazol-3(2H)-ones from 2-mercaptobenzamides. The electrochemical reaction proceeds through intramolecular NH/SH coupling cyclization reaction by generating H2 as the nonhazardous side product. Moreover, the developed procedure is highly advantageous due to its short reaction time, mild conditions and wide substrate scope without
在此,我们报告了一种从 2-巯基苯甲酰胺合成苯并异噻唑-3(2H)-酮的电化学方法。电化学反应通过分子内 N H/S H 偶联环化反应进行,生成 H 2作为无害副产物。此外,该方法反应时间短,条件温和,底物范围广,无需使用金属催化剂和外源性氧化剂。2009 Elsevier Ltd. 版权所有。
Domino Reactions Initiated by Copper‐Catalyzed Aryl‐I Bond Thiolation For the Switchable Synthesis of 2,3‐Dihydrobenzothiazinones and Benzoisothiazolones
作者:Jin Xiong、Guofeng Zhong、Yunyun Liu
DOI:10.1002/adsc.201801221
日期:2019.2
3‐dihydro‐4H‐benzo[e][1,3]thiazin‐4‐ones (2,3‐dihydrobenzothiazinones) are accomplished via copper‐catalyzed aryl C−I thiolation and subsequent N‐, S‐hetero ring formation. In addition, the in situ aryl C−I bond thiolation is also employed for the switchablesynthesis of benzo[d]isothiazol‐3(2H)‐ones (benzoisothiazolones) by subjecting o‐iodobenzamides, elemental sulfur to the copper‐catalyzed condition with
acid), while for selenenyl iodide derivatives, a prevalent contribution of the Se⋯N interaction was predicted. This in silico observation has been experimentally exploited for the efficient synthesis of a small library of N-substituted benzoisoselenazol-3(2H)-ones and benzoisothiazol-3(2H)-ones considering the pharmacological relevance of ebselen recently reported also as an antiviral agent against Sars-Cov2