Potassium Carbonate → Ethyl 8-[(3,4-difluorophenyl)sulfanyl]-3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate

HRID 1398215Notes

Reaction equation

Cl[C:2]1([C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH2:7][CH2:6][CH2:5][N:4]2[C:8]([C:11]3[CH:16]=[CH:15][C:14]([C:17]4[O:21][C:20]([CH3:22])=[N:19][CH:18]=4)=[C:13]([O:23][CH3:24])[CH:12]=3)=[N:9][N:10]=[C:3]12.C(=O)([O-])[O-].[K+].[K+].[F:36][C:37]1[CH:38]=[C:39]([SH:44])[CH:40]=[CH:41][C:42]=1[F:43]>CN(C=O)C.C(OCC)(=O)C>[F:36][C:37]1[CH:38]=[C:39]([S:44][C:2]2([C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH2:7][CH2:6][CH2:5][N:4]3[C:8]([C:11]4[CH:16]=[CH:15][C:14]([C:17]5[O:21][C:20]([CH3:22])=[N:19][CH:18]=5)=[C:13]([O:23][CH3:24])[CH:12]=4)=[N:9][N:10]=[C:3]23)[CH:40]=[CH:41][C:42]=1[F:43]

Participants

Conditions

Temperature: 100 °C

Procedure

To a mixture of ethyl 8-chloro-3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate (500 mg) and potassium carbonate (497 mg) in DMF (6.0 mL) was added 3,4-difluorobenzenethiol (0.133 mL), and the mixture was stirred at 100° C. for 4 hr. The reaction mixture was diluted with ethyl acetate, the mixture was washed with saturated brine and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (491 mg).

Workup

washthe mixture was washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
customthe solvent was evaporated under reduced pressure
customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record: ord-831de1d8f296425793b3c8445d23e61e
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08901309B2

Reaction notes

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