Sodium Carbonate → HCID 58902477, compound

HRID 1640158Notes

Reaction equation

HRID 1640158 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1)[NH2:5].[C:13]([O:17][C:18]([N:20]1[CH:24]=[CH:23][CH:22]=[C:21]1B(O)O)=[O:19])([CH3:16])([CH3:15])[CH3:14].C(=O)([O-])[O-].[Na+].[Na+]>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.COCCOC>[NH2:5][C:4]1[CH:3]=[C:2]([C:21]2[N:20]([C:18]([O:17][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:19])[CH:24]=[CH:23][CH:22]=2)[CH:8]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:6]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 27343211-(tert-Butoxycarbonyl)-2-pyrroleboronic AcidHCID 27358803-Bromo-5-(trifluoromethyl)aniline

Product 1

HCID 58902477HCID 58902477, compoundYield 74.6%

Reagents, catalysts & solvents 3

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

Conditions

Temperature
80 °C

Procedure

A mixture of 3-bromo-5-(trifluoromethyl)aniline (1.50 mL, 10.6 mmol), water (15.0 mL), 1,2 dimethoxyethane (75 mL), [1-(tert-butoxycarbonyl)-1H-pyrrol-2-yl]boronic acid (3.36 g, 15.9 mmol) and sodium carbonate (4.50 g, 42.4 mmol) was degassed with nitrogen for 5 min. Tetrakis(triphenylphosphine)palladium(0) (0.74 mg, 0.64 mmol) was added to the mixture and the slurry was heated at 80° C. for 3 h. Water was added and the mixture was extracted with EtOAc. The organic solutions were combined, dried over Na2SO4, filtered and concentrated. The residue was purified by column chromatography on basic alumina to give tert-butyl 2-[3-amino-5-(trifluoromethyl)phenyl]-1H-pyrrole-1-carboxylate (2.58 g, 74%). LCMS: (FA) ES+ 327.3.

Workup

  1. customwas degassed with nitrogen for 5 min
  2. extractionthe mixture was extracted with EtOAc
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by column chromatography on basic alumina

Sources & evidence

ORD record
ord-35a784e644c94fb8aaf61ac4748c157f
Source dataset
uspto-grants-2012_02
Patent number
US08110687B2

Reaction notes

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