ZnCl
<sub>2</sub>
‐Catalyzed [4+1] Annulation of Alkylthio‐Substituted Enaminones and Enaminothiones with Sulfur Ylides
作者:Yuan He、Jiang Lou、Zhengkun Yu、Yong‐Gui Zhou
DOI:10.1002/chem.201905483
日期:2020.4.16
in the synthesis of potentially bioactive compounds and functional materials. Herein, we report an efficient Lewis acid ZnCl 2 -catalyzed [4+1] annulation of alkylthio-substituted enami-nones, that is, α -oxo ketene N,S -acetals, with sulfur ylides, affording 2-acyl-3-aminofuran derivatives. In a similar fashion, [4+1] annulation of the corresponding enaminothiones, that is, α -thioxo ketene N,S -acetals