Conversion of Thioamides into Their Corresponding Oxygen Analogues Using Silver Carbonate Supported on Celite
作者:B. Movassagh、M. M. Lakouraj、A. Gholami
DOI:10.1080/10426500390228620
日期:2003.9.1
Silvercarbonate supported on celite (Ag2CO3/Celite) is used as a mild heterogeneous reagent for conversion of variety of thioamides into their corresponding amides in acetonitrile at room temperature. We thank the Razi University Research Council for financial assistance.
Catalyst- and Supporting-Electrolyte-Free Electrosynthesis of Benzothiazoles and Thiazolopyridines in Continuous Flow
作者:Ana A. Folgueiras-Amador、Xiang-Yang Qian、Hai-Chao Xu、Thomas Wirth
DOI:10.1002/chem.201705016
日期:2018.1.9
N‐arylthioamides have been converted to the corresponding benzothiazoles in good to excellent yields and with high current efficiencies. This transformation is achieved using only electricity and laboratory grade solvent, avoiding degassing or the use of inert atmosphere. This work highlights three advantages of electrochemistry in flow, which is (i) a supporting electrolyte‐free reaction, (ii) an easy scale‐up
Aniline <i>ortho</i>
C−H Sulfuration/Cyclization with Elemental Sulfur for Efficient Synthesis of 2-Substituted Benzothiazoles under Metal-Free Conditions
作者:Jingjing Jiang、Guozheng Li、Feng Zhang、Hao Xie、Guo-Jun Deng
DOI:10.1002/adsc.201701560
日期:2018.4.17
A three‐component synthesis of 2‐substituted benzothiazoles from aryl amines, elemental sulfur and styrenes or aryl acetylenes in 1‐methylpyrrolidin‐2‐one (NMP) is described. Two C−S and one C−N bonds were selectively formed in one‐pot under metal‐free conditions.
Fe-catalysed oxidative C–H functionalization/C–S bond formation
作者:Haibo Wang、Lu Wang、Jinsai Shang、Xing Li、Haoyuan Wang、Jie Gui、Aiwen Lei
DOI:10.1039/c1cc16184a
日期:——
Iron was used as the catalyst for the direct C-H functionalization/C-S bond formation under mild conditions. Various substrates could afford benzothiazoles in moderate to excellent yields. Preliminary mechanisticstudies revealed that pyridine played a crucial role for the high yields and selectivities.