CAS RN: 429-41-4 | Product Number: T1338
Tetrabutylammonium Fluoride (ca. 1mol/L in Tetrahydrofuran)
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|Molecular Formula / Molecular Weight||C__1__6H__3__6FN = 261.47|
|Physical State (20 deg.C)||Liquid|
|Store Under Inert Gas||Store under inert gas|
|Condition to Avoid||Air Sensitive|
|Reaxys Registry Number||3570522|
|PubChem Substance ID||87577107|
|Merck Index (14)||9187|
|Appearance||Colorless to Red to Green clear liquid|
|Concentration(Nonaqueous Titration)||1.0 to 1.1 mol/L|
|Water||max. 10.0 %|
|TBHF-HF(neutralization titration)||max. 5.0 %|
|Flash point||-17 °C|
|Specific Gravity (20/20)||0.92|
|Solubility in water||Completely miscible|
|Hazard Statements||H302 : Harmful if swallowed.
H314 : Causes severe skin burns and eye damage.
H371 : May cause damage to organs.
H372 : Causes damage to organs through prolonged or repeated exposure.
H351 : Suspected of causing cancer.
H335 : May cause respiratory irritation.
H225 : Highly flammable liquid and vapour.
|Precautionary Statements||P260 : Do not breathe dust/ fume/ gas/ mist/ vapours/ spray.
P210 : Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
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.
|Class||3 / 8|
- A New and Efficient Hypervalent Iodine-Benzyne Precursor, (Phenyl)[o-(trimethylsilyl)phenyl]iodonium Triflate: Generation, Trapping Reaction, and Nature of Benzyne
Under an argon atmosphere, TBAF (1.0 M in THF, 1.5 mL, 1.5 mmol) is added into a suspension of flame-dried MS4Å (1.0 g) in THF (4.0 mL) and the mixture is stirred at room temperature for 2.0 h. Then the mixture is cooled at －20 °C and a solution of ethyl 4,4-difluoro-3-(triethylsilyl)but-3-enoate (265 mg, 1.0 mmol) and benzaldehyde (204 µL, 2.0 mmol) is added to the mixture over 1.0 h at －20 °C. After stirring the mixture for
1 h at the same temperature, the whole is poured into aqueous 10% HCl, extracted with Et2O and the organic layer is dried with anhydrous MgSO4. After evaporation of the solvent, the residue is purified by column chromatography (SiO2, EtOAc : hexane) to give the desired product.
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