3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzohydrazide → ethyl 8-(3,4-difluorophenyl)-3-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate

HRID 71143Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:10]=[CH:11][C:12]=1[N:13]1[CH:17]=[C:16]([CH3:18])[N:15]=[CH:14]1)[C:6]([NH:8][NH2:9])=O.[F:19][C:20]1[CH:21]=[C:22]([C:27]2([C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:32][CH2:31][CH2:30][N:29]=[C:28]2SC)[CH:23]=[CH:24][C:25]=1[F:26]>C(O)C.C(OCC)(=O)C>[F:19][C:20]1[CH:21]=[C:22]([C:27]2([C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:32][CH2:31][CH2:30][N:29]3[C:6]([C:5]4[CH:10]=[CH:11][C:12]([N:13]5[CH:17]=[C:16]([CH3:18])[N:15]=[CH:14]5)=[C:3]([O:2][CH3:1])[CH:4]=4)=[N:8][N:9]=[C:28]23)[CH:23]=[CH:24][C:25]=1[F:26]

Participants

Conditions

Temperature: 90 °C

Procedure

3-Methoxy-4-(4-methyl-1H-imidazol-1-yl)benzohydrazide (236 mg) was added to a mixture of ethyl 3-(3,4-difluorophenyl)-2-(methylsulfanyl)-3,4,5,6-tetrahydropyridine-3-carboxylate (300 mg) in ethanol (3 mL) at room temperature, and the mixture was stirred at 90° C. for 2 days. The reaction mixture was diluted with ethyl acetate, the mixture was washed with water and saturated brine and dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane) to give the title compound (217 mg).

Workup

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

Sources & evidence

ORD record: ord-7e5e81db6df943448764c984567f7593
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08822699B2

Reaction notes

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