Sodium Carbonate → 3-(4-Phenoxyphenyl)pyridin-2-amine

HRID 2035753Notes

Reaction equation

HRID 2035753 reaction equation
C(=O)([O-])[O-].[Na+].[Na+].[O:7]([C:14]1[CH:19]=[CH:18][C:17](B(O)O)=[CH:16][CH:15]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.Br[C:24]1[C:25]([NH2:30])=[N:26][CH:27]=[CH:28][CH:29]=1>COCCOC.O.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>[O:7]([C:14]1[CH:19]=[CH:18][C:17]([C:24]2[C:25]([NH2:30])=[N:26][CH:27]=[CH:28][CH:29]=2)=[CH:16][CH:15]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 8177002-Amino-3-bromopyridineHCID 27343774-Phenoxyphenylboronic acid

Product 1

HCID 655512093-(4-Phenoxyphenyl)pyridin-2-amineYield 97.1%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent2×HCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of sodium carbonate (1.905 g), tetrakis(triphenylphosphine)palladium(0) (519 mg), 4-phenoxyphenylboronic acid (2.5 g) and 3-bromopyridin-2-amine (1.555 g) in 1,2-dimethoxyethane (60 mL) and water (12 mL) was stirred overnight at 80° C. The reaction mixture was added to water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (2.289 g) as a pale-yellow solid.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record
ord-8b969865c2664c8b8c354ab7785c83b2
Source dataset
uspto-grants-2013_11
Patent number
US08575154B2

Reaction notes

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