A new facile method for thia-Fries rearrangement of arylsulfonates has been developed. A variety of arylsulfonates rearrange in excellent yields in the presence of Al2O3/MeSO3H as a new reagent without the use of any solvent.
We gratefully acknowledge the support of this work by the Shiraz University Research Council.
Notes
a Isolated yields.
b 65% bis (4-methyl phenyl) sulfone was obtained (Jacobsen rearrangement).Citation 17