Abstract
Sulfoxides bearing thioester and ester groups at the α position under heating at ca. 140°C undergo Pummerer thermal rearrangement. However, for sulfonyl sulfoxide, a complex mixture of products is formed. Plausible mechanism is advanced.
GRAPHICAL ABSTRACT
Acknowledgements
We acknowledge FAPESP, CNPq and CAPES for a scholarship for one of us (EKCY) and for financial support.