Ammonium Iodide-Mediated Sulfenylation of 4-Hydroxycoumarins or 4-Hydroxyquinolinones with a Sulfonyl Chloride as a Sulfur SourceFinancial support from Open Project of Grain and Corn Engineering Technology Research Center in State Administration of Grain (No. 24400042), the Doctoral Fund of Henan University of Technology (No. 2013BS053), the Colleges and Universities Key Research Program Foundation of Henan Province (No. 17A150006), the Science and Technology Foundation of Henan Province (No. 172102310621), and the Fundamental Research Funds for the Henan Provincial Colleges and Universities in Henan University of Technology (No. 2015QNJH08) are greatly appreciated
Received: 31 May 2017
Accepted after revision: 03 July 2017
02 August 2017 (eFirst)
A novel ammonium iodide-induced sulfenylation of 4-hydroxycoumarins or 4-hydroxyquinolinones by using an aryl- or alkylsulfonyl chloride as the sulfur source gave a wide range of 3-sulfanyl-4-hydroxycoumarins or 3-sulfanyl-4-hydroxyquinolinones, respectively, in moderate to good yields. This method provides as a simple approach to the direct formation of C–S bonds, which is of high value and utility in the pharmaceutical industry.