18546-89-9

Basic information

• Product Name: Silane, (dithiodi-4,1-phenylene)bis[trimethyl-
• CAS NO: 18546-89-9
• Molecular Formula: C18H26S2Si2
• Molecular Weight: 362.707
• Mol File: 18546-89-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Silane, (dithiodi-4,1-phenylene)bis[trimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Silane, (dithiodi-4,1-phenylene)bis[trimethyl-(18546-89-9)
• EPA Substance Registry System: Silane, (dithiodi-4,1-phenylene)bis[trimethyl-(18546-89-9)

Safety Data

• Hazardous Substances Data: 18546-89-9(Hazardous Substances Data)

Upstream product

• 22515-25-9 [4-(methylsulfanyl)phenyl]trimethylsilane 
• 104-95-0 (4-bromophenyl)thioanisole 
• 17878-43-2 [4-(trimethylsilyl)phenyl]magnesium bromide 

Downstream Products

• 17909-50-1 [4-(2,4-dinitro-phenylsulfanyl)-phenyl]-trimethyl-silane 
• 18407-57-3 4-(4-trimethylsilanyl-phenylsulfanyl)-pyridine-1-oxide 
• 18407-67-5 trimethyl-[4-(6-methyl-pyrimidin-4-ylmercapto)-phenyl]-silane 
• 79817-20-2 S-phenyl dodecanethioate 
• 30134-12-4 phenyl 3-phenylpropyl sulfide 
• 850186-12-8 phenyl 4-trimethylsilylphenylthiocarboxylate 
• 497181-12-1 1-phenyl-3-(4-trimethylsilylphenyl)thiopropane 
• 850186-10-6 1-(4-trimethylsilylphenyl)thiononane 
• 17882-12-1 4-trimethylsilylbenzenethiol 

Relevant articles and documents

Ipso-Fluorination of aryltrimethylsilanes using xenon difluoride

Reaction of aryltrimethylsilanes with xenon difluoride in C 6F6/Pyrex at room temperature gives aryl fluorides in good yield. The reaction is inhibited when acetonitrile is used as solvent but proceeds well in CFCl3/Pyrex or CH 2Cl2/Pyrex. Pyrex appears to be a very effective heterogeneous catalyst for this ipso-fluorination. The reaction does not proceed in PTFE, quartz, soda glass or glassy-carbon flasks or Pyrex flasks pre-rinsed with 2 M NaOH. Aryltrimethylstannanes and arylboronic acids and their esters do not undergo ipso-fluorination under similar conditions. Plausible mechanisms involving electrophilic addition of polarised xenon difluoride [FXeδ+?F→Pyrex δ-] followed by ligand coupling are discussed.