title: 4-Bromothiophenol
text: # 4-Bromothiophenol
  
  4-Bromothiophenol is an organic compound with the formula $BrC_6H_4SH.$ It forms colorless crystals.
  
  ## Synthesis
  
  4-Bromothiophenol can be synthesized via the reduction of 4-bromo-benzenesulfonyl chloride by red phosphorus and iodine in an acidic solution. Hydrogenation of 4,4'-dibromodiphenyl disulfide also produces 4-bromothiophenol.
  
  ## Reactions
  
  It reacts with acetylacetone in the presence of cesium carbonate to give 3-(4-bromophenylthio)pentane-2,4-dione. 4,4'-Dibromophenyl disulfide is also produced as the intermediate.
  
  Like other thiols, it reacts with silver nitrate to produce silver 4-bromothiophenolate.
  
  