Sodium Carbonate → 4-Fluoro-2'-methoxy-3-nitrobiphenyl

HRID 1937605Notes

Reaction equation

HRID 1937605 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1B(O)O.Br[C:13]1[CH:14]=[CH:15][C:16]([F:22])=[C:17]([N+:19]([O-:21])=[O:20])[CH:18]=1.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:22][C:16]1[CH:15]=[CH:14][C:13]([C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=2[O:2][CH3:1])=[CH:18][C:17]=1[N+:19]([O-:21])=[O:20]

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 27339582-Methoxyphenylboronic acidHCID 27363284-Bromo-1-fluoro-2-nitrobenzene

Product 1

HCID 108243734-Fluoro-2'-methoxy-3-nitrobiphenyl

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 1140TolueneSolvent

Procedure

Tetrakis(triphenylphosphine)palladium (1 g) was added to a mixture of 5 g of 2-methoxyphenylboronic acid, 6.6 g 5-bromo-2-fluoronitrobenzene and 30 mL 2 M sodium carbonate solution in 50 mL toluene and 50 mL ethanol. The mixture was refluxed for 2 hours, concentrated, and the residue extracted twice with ethyl acetate. The combined ethyl acetate layers were washed with water and brine, dried, and concentrated to give a dark green oil which solidified on standing to give crude 4-fluoro-2′-methoxy-3-nitrobiphenyl.

Workup

  1. temperatureThe mixture was refluxed for 2 hours
  2. concentrationconcentrated
  3. extractionthe residue extracted twice with ethyl acetate
  4. washThe combined ethyl acetate layers were washed with water and brine
  5. customdried
  6. concentrationconcentrated
  7. customto give a dark green oil which

Sources & evidence

ORD record
ord-0bf0d72157374153ba5c4561801ab727
Source dataset
uspto-grants-2002_05
Patent number
US06395734B1

Reaction notes

Loading…