Sodium Carbonate → Tert-butyl 4-(2-aminopyrimidin-5-yl)benzoate

HRID 500161Notes

Reaction equation

C(=O)([O-])[O-].[Na+].[Na+].Br[C:8]1[CH:9]=[N:10][C:11]([NH2:14])=[N:12][CH:13]=1.[C:15]([O:19][C:20]([C:22]1[CH:27]=[CH:26][C:25](B(O)O)=[CH:24][CH:23]=1)=[O:21])([CH3:18])([CH3:17])[CH3:16]>O.C(O)C.C1(C)C=CC=CC=1.CCOC(C)=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>[NH2:14][C:11]1[N:10]=[CH:9][C:8]([C:25]2[CH:26]=[CH:27][C:22]([C:20]([O:19][C:15]([CH3:16])([CH3:17])[CH3:18])=[O:21])=[CH:23][CH:24]=2)=[CH:13][N:12]=1

Participants

Conditions

Temperature: 120 °C

Procedure

Sodium carbonate (0.636 g, 6.0 mmol) in water (2.0 mL) was added to a mixture of 5-bromopyrimidin-2-amine (0.348 g, 2.0 mmol), [4-(tert-butoxycarbonyl)phenyl]boronic acid (0.533 g, 2.4 mmol) and tetrakis(triphenylphosphine)palladium (69 mg, 0.06 mmol) in ethanol (3 mL) and toluene (3 mL). The mixture was heated at 120° C. for 3 h. After cooling to RT, the mixture was diluted with EtOAc and washed with water and brine. The organic layer was dried over Na2SO4, filtered and concentrated under reduced pressure to afford the desired product (470 mg, 86.6%) which was directly used in next step. LCMS: (M+H)=272.1.

Workup

temperatureAfter cooling to RT
washwashed with water and brine
dry with materialThe organic layer was dried over Na2SO4
filtrationfiltered
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-49ac0451910a4468a3f9af6045445683
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07767675B2

Reaction notes

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