Perchloromethyl mercaptan () reacts with  bonds in the presence of base to give the sulfenamides:
This method is used in the production of the fungicides Captan and Folpet.
Sulfenyl chlorides add across alkenes, for example ethylene:
They undergo chlorination to the trichlorides:
Sulfenyl chlorides react with water and alcohols to give sulfenyl esters ():