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

HRID 1747867Notes

Reaction equation

HRID 1747867 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-69ddbe47577840af83effd43bd16c7f7
Source dataset
uspto-grants-2015_10
Patent number
US09150591B2

Reaction notes

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