Water → 5-(4-Bromo-3-fluorophenyl)pyrimidin-2-amine

HRID 500200Notes

Reaction equation

Br[C:2]1[CH:3]=[N:4][C:5]([NH2:8])=[N:6][CH:7]=1.[Br:9][C:10]1[CH:15]=[CH:14][C:13](B(O)O)=[CH:12][C:11]=1[F:19].P([O-])([O-])([O-])=O.[K+].[K+].[K+].O>O1CCOCC1.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>[Br:9][C:10]1[CH:15]=[CH:14][C:13]([C:2]2[CH:3]=[N:4][C:5]([NH2:8])=[N:6][CH:7]=2)=[CH:12][C:11]=1[F:19]

Participants

Conditions

Temperature: 120 °C

Procedure

To a solution of 5-bromopyrimidin-2-amine (2.1 g, 0.012 mol) in 1,4-dioxane (30 mL) was added (4-bromo-3-fluorophenyl)boronic acid (2.0 g, 0.0091 mol), potassium phosphate (6.4 g, 0.030 mol) and tetrakis(triphenylphosphine)palladium (700 mg, 0.6 mmol), water (5 mL). The solution was degassed with N2, and heated at 120° C. for 4 h. The mixture was cooled to RT, poured into water, and extracted with EtOAc. The combined organic layers were washed with brine, dried with MgSO4, filtered, and concentrated. The residue was purified by chromatography on silica gel with EtOAc in CH2Cl2 (0-30%) to afford the desired compound. LCMS: (M+H)=267.9.

Workup

customThe solution was degassed with N2
temperatureThe mixture was cooled to RT
additionpoured into water
extractionextracted with EtOAc
washThe combined organic layers were washed with brine
dry with materialdried with MgSO4
filtrationfiltered
concentrationconcentrated
customThe residue was purified by chromatography on silica gel with EtOAc in CH2Cl2 (0-30%)

Sources & evidence

ORD record: ord-7956a94d267945b3ab042dbd20e083f0
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07767675B2

Reaction notes

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