“New Reaction Mode of 3-Haloxindoles for Formation of Indolenine-Fused 2H-1,4-Oxathiines”

https://pubmed.ncbi.nlm.nih.gov/38114417

This study reports a new reaction mode of 3-halooxindoles as C-C-O three-atom components for (3+3) cycloaddition with pyridinium 1,4-zwitterionic thiolates to form indolenine-fused 2H-1,4-oxathiines.