Reaction of Thioanisol with Antimony Pentachloride

Article abstract of DOI:10.1002/ardp.19823150210

The reaction of antimony pentachloride with thioanisole (5) at -70 deg C leads to the formation of the sulfonium salt 6, whereas at 0 deg C the chlorosulfonium salt 7 is formed.Under similar conditions 4-methylthioanisole (9) is converted into the expected chlorosulfonium salt 10, which decomposed, however, during isolation experiments.