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

HRID 1688974Notes

Reaction equation

[CH2:1]([C:5]1[N:10]2[N:11]=[CH:12][N:13]=[C:9]2[N:8]([CH:14]2[CH2:23][CH2:22][C:17]3(OCC[O:18]3)[CH2:16][CH2:15]2)[C:7](=[O:24])[C:6]=1[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=2[C:38]2[NH:42][C:41](=[O:43])[O:40][N:39]=2)=[CH:28][CH:27]=1)[CH2:2][CH2:3][CH3:4].Cl.O1CCCC1>C(OCC)(=O)C>[CH2:1]([C:5]1[N:10]2[N:11]=[CH:12][N:13]=[C:9]2[N:8]([CH:14]2[CH2:23][CH2:22][C:17](=[O:18])[CH2:16][CH2:15]2)[C:7](=[O:24])[C:6]=1[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=2[C:38]2[NH:42][C:41](=[O:43])[O:40][N:39]=2)=[CH:28][CH:27]=1)[CH2:2][CH2:3][CH3:4]

Participants

Conditions

Temperature: 40 °C

Procedure

A mixture of 7-butyl-4-(1,4-dioxaspiro[4.5]dec-8-yl)-6-{[2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}[1,2,4]triazolo[1,5-a]pyrimidin-5(4H)-one (0.27 g), 6N hydrochloric acid (2 mL) and tetrahydrofuran (10 mL) was stirred at 40° C. for 3 hr. The reaction mixture was diluted with ethyl acetate, washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as colorless crystals (0.21 g, 83%).

Workup

washwashed 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

Sources & evidence

ORD record: ord-aa391d83be2e466aaf3742ee85c32907
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08148383B2

Reaction notes

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