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CAS RN: 127783-34-0 | Product Number: E0467

Ethynyl(phenyl)iodonium Tetrafluoroborate [Ethynylating Reagent]

Purity: >97.0%(T)
2   18  

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Product Number E0467
Purity / Analysis Method >97.0%(T)
Molecular Formula / Molecular Weight C__8H__6BF__4I = 315.84  
Physical State (20 deg.C) Solid
Storage Temperature <0°C
Condition to Avoid Heat Sensitive
CAS RN 127783-34-0
Reaxys Registry Number 3578342
PubChem Substance ID 87569719
MDL Number


Appearance White to Almost white powder to crystal
Purity( Potassium iodate Method) min. 97.0 %
Properties (reference)
Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H302 : Harmful if swallowed.
H314 : Causes severe skin burns and eye damage.
Precautionary Statements P260 : Do not breathe dust or mist.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P301 + P330 + P331 : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/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/doctor.
Related Laws: / Compliance with laws, Regulations
Transport Information:
UN Number UN1759
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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