Water → 6-(5-Methoxy-2-phenylindol-1-ylmethyl)pyridine-2-carboxamidoxime

HRID 2400281Notes

Reaction equation

Cl.[NH2:2][OH:3].C(=O)([O-])O.[Na+].[CH3:9][O:10][C:11]1[CH:12]=[C:13]2[C:17](=[CH:18][CH:19]=1)[N:16]([CH2:20][C:21]1[N:26]=[C:25]([C:27]#[N:28])[CH:24]=[CH:23][CH:22]=1)[C:15]([C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[CH:14]2.O>CS(C)=O>[CH3:9][O:10][C:11]1[CH:12]=[C:13]2[C:17](=[CH:18][CH:19]=1)[N:16]([CH2:20][C:21]1[N:26]=[C:25]([C:27](=[N:2][OH:3])[NH2:28])[CH:24]=[CH:23][CH:22]=1)[C:15]([C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[CH:14]2

Participants

Conditions

Temperature: 50 °C

Procedure

To a suspension of hydroxylamine hydrochloride (233 mg) in dimethylsulfoxide (1.7 mL) was added sodium hydrogen carbonate (338 mg), and this mixture was stirred at 50° C. for 1 hour. Subsequently, 6-(5-methoxy-2-phenylindol-1-ylmethyl)pyridine-2-carbonitrile (114 mg) was added thereto, followed by stirring at 80° C. overnight. Water was added to the reaction mixture, followed by extraction with ethyl acetate. The organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure to obtain the title compound (124 mg). 1H-NMR (DMSO-d6) δ ppm: 3.76 (3H, s), 5.51 (2H, s), 5.65 (2H, br s), 6.59 (1H, s), 6.70-6.85 (2H, m), 7.11 (1H, d, J=2.4 Hz), 7.32 (1H, d, J=8.9 Hz), 7.35-7.70 (7H, m), 9.92 (1H, s).

Workup

stirringby stirring at 80° C. overnight
extractionfollowed by extraction with ethyl acetate
washThe organic layer was washed with water and saturated brine
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-a549ce7812664e109cd1827f3f9aba9e
Source dataset: uspto-grants-2014_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08796247B2

Reaction notes

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