Hydrochloric Acid → 4-[(2E)-2-(methoxyimino)propyl]-2-methyl-6-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one

HRID 2048712Notes

Reaction equation

[CH3:1][C:2]1[N:37]=[C:5]2[N:6]([CH2:33][C:34](=O)[CH3:35])[C:7](=[O:32])[C:8]([CH2:13][C:14]3[CH:19]=[CH:18][C:17]([C:20]4[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=4[C:26]4[NH:30][C:29](=[O:31])[O:28][N:27]=4)=[CH:16][CH:15]=3)=[C:9]([CH2:10][CH2:11][CH3:12])[N:4]2[N:3]=1.Cl.[NH2:39][O:40][CH3:41].N1C=CC=CC=1.Cl>O.C(OCC)(=O)C>[CH3:41][O:40]/[N:39]=[C:34](/[CH3:35])\[CH2:33][N:6]1[C:7](=[O:32])[C:8]([CH2:13][C:14]2[CH:19]=[CH:18][C:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[C:26]3[NH:30][C:29](=[O:31])[O:28][N:27]=3)=[CH:16][CH:15]=2)=[C:9]([CH2:10][CH2:11][CH3:12])[N:4]2[N:3]=[C:2]([CH3:1])[N:37]=[C:5]12

Participants

Conditions

Temperature: 110 °C

Procedure

A mixture of 2-methyl-6-{[2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-4-(2-oxopropyl)-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one (0.2 g), (aminooxy)methane hydrochloride (0.67 g) and pyridine (10 mL) was stirred at 110° C. for 16 hr. Ethyl acetate and water were added to the reaction mixture, and the mixture was adjusted to pH 4 with 1 N hydrochloric acid. The ethyl acetate layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give the title compound as colorless crystals (0.016 g, 8%).

Workup

washThe ethyl acetate layer was washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
customThe solvent was evaporated under reduced pressure
customThe obtained residue was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-dd9fd61805b246f7bc5252f774266ca1
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08592431B2

Reaction notes

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