A catalyst-free and additive-free method for the synthesis of benzothiazolethiones from <i>o</i>-iodoanilines, DMSO and potassium sulfide
作者:Xiaoming Zhu、Wenguang Li、Xiai Luo、Guobo Deng、Yun Liang、Jianbing Liu
DOI:10.1039/c8gc00477c
日期:——
Under catalyst-free and additive-free conditions, a novel, convenient, environment-friendly method for the synthesis of benzothiazolethiones from o-iodoanilines, K2S and DMSO has been developed.
Cleaner and greener synthesis of 3<i>H</i>-benzothiazole-2-thione and its derivatives
作者:Nitin Srivastava、Ram Kishore
DOI:10.1080/17415993.2020.1803321
日期:2021.1.2
A cleaner and greener method of synthesis of 3H-benzothiazole-2-thione is being reported in this communication. In this method, various o-iodoaniline derivatives are reacted with carbon disulfide in the presence of Cs2CO3 and tetramethyl ammonium bromide (TMAB) to give 3H-benzothiazole-2-thione and itsderivatives in higher yields. GRAPHICAL ABSTRACT
A facile access to benzo[d]thiazole-2(3H)-thiones and benzo[d]thiazol-2(3H)-ones has been developed through a temperature-controlled intermolecular [3 + 2] annulation of N,N-disubstituted arylhydrazines with CS2 in the presence of DMSO. This protocol can obviate the prefunctionalization of the starting materials. This direct C–S/C–N bond formation reaction was performed in the absence of any external
通过温度控制的 N,N 分子间 [3 + 2] 环化,开发了一种容易获得苯并[ d ]噻唑-2(3 H )-硫酮和苯并[ d ]噻唑-2(3 H )-酮的方法-在DMSO存在下用CS 2二取代的芳基肼。该协议可以避免起始材料的预功能化。这种直接的 C-S/C-N 键形成反应是在没有任何外部催化剂、过渡金属、碱、配体和氧化剂的情况下进行的,具有高步骤经济性。
814. 2-Mercaptobenzothiazole derivatives. Part II. The thermal decomposition and isomerisation of 2-alkyl- and 2-alkenyl-thiobenzothiazoles and 3-alkyl- and 3-alkenyl-2-thiobenzothiazolines
作者:C. G. Moore、E. S. Waight
DOI:10.1039/jr9520004237
日期:——
Copper-Catalyzed Three-Component Synthesis of Benzothiazolethiones from <i>o</i>-Iodoanilines, Isocyanide, and Potassium Sulfide
作者:Pan Dang、Weilan Zeng、Yun Liang
DOI:10.1021/ol503186w
日期:2015.1.2
An efficient copper catalyzed strategy for the synthesis of a variety of benzothiazolethione derivatives has been developed. In the presence of CuCl, the three-component reaction of o-iodoanilines and K2S with p-toluenesulfonylmethyl isocyanide proceeded smoothly to obtain the corresponding benzothiazolethiones in good to excellent isolated yields. Notably, isocyanide functioned as a carbon source and K2S functioned as a sulfur source in this reaction.