Sodium hydride → 2-Methyl-8-[6-(4-trifluoromethyl-phenyl)-pyrimidin-4-yloxy]-quinoxaline

HRID 858994Notes

Reaction equation

Cl[C:2]1[CH:7]=[C:6]([C:8]2[CH:13]=[CH:12][C:11]([C:14]([F:17])([F:16])[F:15])=[CH:10][CH:9]=2)[N:5]=[CH:4][N:3]=1.[CH3:18][C:19]1[CH:20]=[N:21][C:22]2[CH:23]=[CH:24][CH:25]=[C:26]([OH:29])[C:27]=2[N:28]=1.[H-].[Na+]>CN(C=O)C>[CH3:18][C:19]1[CH:20]=[N:21][C:22]2[C:27](=[C:26]([O:29][C:2]3[CH:7]=[C:6]([C:8]4[CH:13]=[CH:12][C:11]([C:14]([F:17])([F:16])[F:15])=[CH:10][CH:9]=4)[N:5]=[CH:4][N:3]=3)[CH:25]=[CH:24][CH:23]=2)[N:28]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a mixture of 4-chloro-6-(4-trifluoromethyl-phenyl)-pyrimidine, (Example 2(a), Method A), (0.20 g, 0.77 mmol) and 3-methyl-quinoxalin-5-ol (0.14 g, 0.85 mmol, prepared according to J. Med. Chem. 1988, 41, 4062–4079.) in DMF (3 mL) was added sodium hydride (0.040 g, 1.0 mmol, 60% dispersion in mineral oil, Aldrich). The reaction was heated at 60° C. for 24 h, allowed to cool to room temperature and partitioned between EtOAc and H2O. The aqueous layer was extracted with EtOAc (4×). The combined organic layers were dried over MgSO4, filtered and the solvent was removed in vacuum. The residue was purified by flash chromatography (0→75% EtOAc/hexanes) to give the title compound as an ivory powder. Mp: 139–141° C., MS (ESI, pos. ion) m/z: 383 (M+1).

Workup

temperatureto cool to room temperature
custompartitioned between EtOAc and H2O
extractionThe aqueous layer was extracted with EtOAc (4×)
dry with materialThe combined organic layers were dried over MgSO4
filtrationfiltered
customthe solvent was removed in vacuum
customThe residue was purified by flash chromatography (0→75% EtOAc/hexanes)

Sources & evidence

ORD record: ord-daf2b094ed864113b059aaaf3fadcdeb
Source dataset: uspto-grants-2006_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07148221B2

Reaction notes

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