A general method for the synthesis of isoselenazoles and isothiazoles has been developed by the base-promoted demethoxylative cycloaddition of alkynyl oximeethers using the cheap and inactive Se powder and Na2S as selenium and sulfur sources. This transformation features the direct construction of N-, Se-, and S-containing heterocycles through the formation of N–Se/S and C–Se/S bonds in one-pot reactions
Synthesis of Isothiazoles through <i>N</i>-Propargylsulfinylamide: TFA-Promoted Sulfinyl Group-Involved Intramolecular Cyclization
作者:Ziyi Li、Nana Wang、Jiang Liu、Haibo Mei、Vadim A. Soloshonok、Jianlin Han
DOI:10.1021/acs.orglett.1c02538
日期:2021.9.3
assembly of poly functionalized isothiazoles. This intramolecular cyclization reaction could be conducted under mild and convenient conditions and tolerates several fluoroalkyl and substituted phenyl groups with good chemical yields. This reaction not only represents a new reactivity of tert-butanesulfinamide but also provides an easy strategy for the synthesis of isothiazoles.