Phosphorus tribromide → 3-Fluoro-4-(methylsulphonyl)benzyl bromide

HRID 1754507Notes

Reaction equation

HRID 1754507 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH2:12]O)[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:10])=[O:9].P(Br)(Br)[Br:15]>C(OCC)C.O>[Br:15][CH2:12][C:4]1[CH:5]=[CH:6][C:7]([S:8]([CH3:11])(=[O:10])=[O:9])=[C:2]([F:1])[CH:3]=1

Participants

5

Reactant 2

HCID 24614Phosphorus tribromideHCID 672190853-Fluoro-4-(methylsulphonyl)benzyl alcohol

Product 1

HCID 672190653-Fluoro-4-(methylsulphonyl)benzyl bromide

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 3283Diethyl EtherSolvent

Procedure

To a stirred suspension of (3-fluoro-4-methanesulfonyl-phenyl)-methanol (0.269 g, 1.31 mmol) in diethyl ether (5 ml) under an inert atmosphere of Argon is added dropwise phosphorus tribromide (46 μl, 0.434 mmol). After stirring at room temperature overnight, the reaction mixture is diluted with water (2 ml) and the diethyl ether layer separated. This organic portion is placed over NaOH pellets and after 20 minutes, is used as a reagent in solution in diethyl ether.

Workup

  1. customthe diethyl ether layer separated
  2. waitThis organic portion is placed over NaOH pellets and after 20 minutes

Sources & evidence

ORD record
ord-11b1a8b9552c4759a9a6baf5de387613
Source dataset
uspto-grants-2015_10
Patent number
US09169251B2

Reaction notes

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