Palladium Catalyzed Direct Carbonylative Thiomethylation of Aryldiazonium Salts and Amines with 4‑(Methylthio)-2-Butanone as (Methylthio) Transfer Agent

Herein,
an interesting palladium-catalyzed procedure for the direct
carbonylative thiomethylation of aromatic amine derivatives with 4-methylthio-2-butanone
is developed. Using 4-methylthio-2-butanone as (methylthio) transfer
agent, a variety of corresponding thioesters are obtained with moderate
to good yields under base-free condition. In addition, good functional
group tolerance can be observed.