A new method for the preparation of alkyl aryl sulfides through direct oxidative thiolation of alkanes or ethers with arylsulfonyl hydrazides using DTBP as an oxidant catalyzed by Pd(OAc)₂ has been reported. The C–H bonds in various alkanes or ethers were successfully converted into C–S bonds with moderate to good yields.

Cu(OAc)₂-promoted TBHP oxidative coupling reaction of formamides with thiols successfully proceeded through direct C–H bond activation of formamides. The corresponding S-phenyl dialkyl thiocarbamate compounds were formed with high yield under solvent-free conditions.

Efficient chloro-alkylthiolation and trifluoromethylthiolation of indole derivatives were developed. Triphosgene was used as a reducing agent for the first time to convert sodium sulfinate to highly active electrophilic intermediates (CH₃SCl and CF₃SOCl). This strategy involves the use of cheap and readily available reagents and has broad substrate scope.