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Ethynyl(phenyl)iodonium Tetrafluoroborate [Ethynylating Reagent]
(CAS RN:127783-34-0 Product Number:E0467)


Ethynyl(phenyl)iodonium Tetrafluoroborate

General Information

Product Number E0467

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Purity/Analysis Method >97.0%(T)
Storage Temperature <0°C
M.F. / M.W. C8H6BF4I=315.84
CAS RN 127783-34-0
Related CAS RN
MDL Number MFCD00191648
Packaging and Container
  • Product Details
  • Safety & Regulations


Purity( Potassium iodate Method) min. 97.0 %


Reaxys-RN 3578342
PubChem SID 87569719


Signal Word Danger
Hazard Statements
  • H302
  • :Harmful if swallowed.
  • H314
  • :Causes severe skin burns and eye damage.
Precautionary Statements
  • P260
  • :Do not breathe dusts or mists.
  • P280
  • :Wear protective gloves, protective clothing, face protection.
  • P301+P330+P331+P310
  • :IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Immediately call a POISON CENTER or doctor.
  • P303+P361+P353+P310+P363
  • :IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower. Immediately call a POISON CENTER or doctor. Wash contaminated clothing before reuse.
  • P304+P340+P310
  • :IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER or doctor.
  • P305+P351+P338+P310
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor.

Transport Information

UN Number 1759
Class 8
Packing Group III
HS Number 2942000000


Ethynylation of 1,3-Dicarbonyl Compounds

Typical Procedure:
A solution of 1,3-dicarbonyl compound (76 mg, 0.40 mmol) and NaH (11 mg, 0.48 mmol) in THF (2 mL) is stirred at rt for 1 h under an atmosphere of nitrogen. Ethynyl(phenyl)iodonium tetrafluoroborate1) (150 mg, 0.48 mmol) is then added and the resulting mixture is stirred at rt for 3 h. The reaction mixture is diluted with H2O (5 mL) and extracted with Et2O (3 x 10 mL). The combined organic layers are dried over MgSO4 and the solvent is removed under reduced pressure. The crude product is purified by silica gel flash chromatography (Hexane : EtOAc = 20 : 1) to afford the ethynylated compound (59 mg, 69%) as yellow solid.


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