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(2-Bromoethyl)diphenylsulfonium Trifluoromethanesulfonate
(CAS RN:247129-85-7 Product Number:B3958)


(2-Bromoethyl)diphenylsulfonium Trifluoromethanesulfonate
Synonym (2-Bromoethyl)diphenylsulfonium Triflate

General Information

Product Number B3958

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Purity/Analysis Method >98.0%(HPLC)(T)
Storage Temperature
M.F. / M.W. C15H14BrF3O3S2=443.29
CAS RN 247129-85-7
Related CAS RN
MDL Number MFCD12546049
Packaging and Container
  • Product Details
  • Safety & Regulations
  • Reference & Application


Purity(HPLC) min. 98.0 area%
Purity(Argentmetric Titration) min. 98.0 %
Melting point 88.0 to 92.0 deg-C


Reaxys-RN 8458234
PubChem SID 172089093


Signal Word Warning
Hazard Statements
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :If on skin: Wash with plenty of soap and water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.


An Efficient Vinyl Sulfonium Salt Precursor for the Synthesis of Imidazolinium Salts


Typical Procedure (R1 = R2 = 2,6-diisopropylphenyl) : (2-Bromoethyl)diphenylsulfonium Trifluoromethanesulfonate (610 mg, 1.38 mmol) is added to a stirred solution of N,N’-bis(2,6-diisopropylphenyl)formamidine (400 mg, 1.10 mmol) and diisopropylethylamine (0.48 mL, 2.75 mmol) in 8 mL of anhydrous MeCN under a nitrogen atmosphere. After refluxing for 1.5 h, the mixture is cooled to rt and the solvent is reduced to half in volume by nitrogen overflow. Ether is added and the mixture is stirred until a precipitate formed. The precipitate is collected by filtration and washed in the following order: Hot (100-110 °C) toluene (1-4 mL), diethyl ether (3 mL), water (1-4 mL) and diethyl ether (3 mL). Then it is dried in vacuo to give 1,3-bis(2,6-diisopropylphenyl)imidazolinium trifluoromethanesulfonate (532 mg, 90%) as an amorphous powder.


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