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ChemicalBook CAS DataBase List 4-BROMO-2,5-DIFLUOROPHENOL
486424-36-6

4-BROMO-2,5-DIFLUOROPHENOL synthesis

2synthesis methods
2713-31-7 Synthesis
2,5-Difluorophenol

2713-31-7
239 suppliers
$5.00/1g

-

Yield:486424-36-6 81.05%

Reaction Conditions:

with bromine in chloroform at 0 - 20; for 3 h;

Steps:

86
Intermediate 117: 4-Bromo-2, 5-difluorophenolTo a 250 mL RB flask fitted with magnetic stirrer was charged with 100 mL of CHCI3. To the stirred solvent were added 2, 5-difluorophenol (5.0 g, 38.4 mmol), bromine (6.14 g, 38.4 mmol), at 0 °C and stirred at room temperature, for 3 h. The reaction mixture was quenched with sodium thio sulphate solution (20 mL) and extracted with ethyl acetate (15 mL X 2). The organic layer was washed with water (50 mL), followed by brine solution (20 mL). The organic layer was dried over anhydrous Na2S04 and the solvent was removed under reduced pressure to obtain product (6.5 g, yield: 81.05%).

References:

CONNEXIOS LIFE SCIENCES PVT. LTD.;RANGANATH RAO, Jagannath Madanahalli;ARUMUGAM, Nagarajan;ANSARI, Mohd Mudabbir;GUDLA, Chandrasekhar;PACHIYAPPAN, Shanmugam;RAMALINGAM, Manivannan;GEORGE, Jenson;ARUL, George Fernanda;BOMMEGOWDA, Y, Kenchegowda;ANGUPILLAI, Sathesh Kumar;KOTTAMALAI, Ramamoorthy;JIDUGU, Pradeep;RAO, D, Shivanageshwara WO2012/11125, 2012, A1 Location in patent:Page/Page column 154

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