Specifications
CLASS
Fluorination Reagents [Synthetic Reagents]
SUBCLASS
Difluoromethylation [Synthetic Reagents]
APPLICATION
Difluorocarbene Precursor
Experimental procedure: to a solution of 1,1-diphenylethylene (181.3 mg, 1.0 mmol) in diglyme (5 mL) is added a diglyme solution (10 mL) of sodium bromodifluoroacetate (78 mg, 0.40 mmol) dropwise for 10 min at 150 °C. Then, the reaction mixture is stirred for 5 min at 150 °C. After cooling to r.t., the reaction is quenched with ice water (30 mL). The organic materials are extracted with hexane (4 × 50 mL) and the combined organic layers are washed with brine (200 mL) and dried (Na2SO4). After removal of the solvent under reduced pressure, the residue is purified by silica gel column chromatography (hexane:EtOAc=100:1) to give 1,1-difluoro-2,2-diphenylcyclopropane (231.6 mg, 99%) as a colorless solid.
PUBCHEM SUBSTANCE ID
253660024.0
BEILSTEIN/REAXYS NUMBER
8229431.0
HAZARD STATEMENTS
H302 + H312 + H332 : Harmful if swallowed, in contact with skin or if inhaled.
PRECAUTIONARY STATEMENTS
P501 : Dispose of contents/ container to an approved waste disposal plant.
P261 : Avoid breathing dust/ fume/ gas/ mist/ vapors/ spray.
P270 : Do not eat, drink or smoke when using this product.
P271 : Use only outdoors or in a well-ventilated area.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ protective clothing.
P363 : Wash contaminated clothing before reuse.
P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth.
P302 + P352 + P312 : IF ON SKIN: Wash with plenty of water.Call a POISON CENTER/doctor if you feel unwell.
P304 + P340 + P312 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell.
*USAGE / SAFETY STATEMENT
For laboratory research and development purposes only.
QUALITY CERTIFICATION / COMPLIANCE
Fukaya factory is certified for GMP, ISO14001:2004 (JQA-EM5386) and IQ Net (JP-JQA-EM5386).
APPEARANCE
White to Almost white powder to crystaline
MOLECULAR FORMULA
C2BrF2NaO2
PURITY (HPLC)
min. 98.0 area%
PURITY / ANALYSIS METHOD
>98.0%(T)(HPLC)