Ethanol, 2-(aminooxy)-, hydrochloride → 2-[(E)-1-[3-[1-(5,7-difluoroquinolin-6-yl)ethyl]triazolo[4,5-b]pyrazin-5-yl]ethylideneamino]oxyethanol

HRID 1959772Notes

Reaction equation

[F:1][C:2]1[C:11]([CH:12]([N:14]2[C:18]3=[N:19][C:20]([C:23](=O)[CH3:24])=[CH:21][N:22]=[C:17]3[N:16]=[N:15]2)[CH3:13])=[C:10]([F:26])[CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[N:7]2.Cl.[NH2:28][O:29][CH2:30][CH2:31][OH:32]>CO>[OH:32][CH2:31][CH2:30][O:29]/[N:28]=[C:23](/[C:20]1[N:19]=[C:18]2[N:14]([CH:12]([C:11]3[C:2]([F:1])=[C:3]4[C:8](=[CH:9][C:10]=3[F:26])[N:7]=[CH:6][CH:5]=[CH:4]4)[CH3:13])[N:15]=[N:16][C:17]2=[N:22][CH:21]=1)\[CH3:24]

Participants

Conditions

Temperature: 45 °C

Procedure

To a solution of 1-(1-(1-(5,7-difluoroquinolin-6-yl)ethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)ethanone (76.5 mg, 0.22 mmol) in MeOH (50 mL) was added 2-(aminooxy)ethanol hydrochloride (49.0 mg, 0.43 mol). The mixture was heated at 45° C. overnight. The solvent was removed under reduced pressure. The residue was purified by column chromatography with gradient (DCM/MeOH=10:1) to give the title compound as a white solid (58.0 mg, 62%). 1H-NMR (400 MHz, DMSO-d6) δ ppm 9.23 (s, 1H), 9.01 (dd, 1H), 8.52 (d, 1H), 7.74 (d, 1H), 7.63 (dd, 1H), 6.80 (q, 1H), 4.74 (t, 1H), 4.27 (t, 2H), 3.68 (m, 2H), 2.36 (d, 3H), 2.10 (s, 3H). LCMS (method A): [MH]+=414, tR=5.44 min.

Workup

customThe solvent was removed under reduced pressure
customThe residue was purified by column chromatography with gradient (DCM/MeOH=10:1)

Sources & evidence

ORD record: ord-a2d72288156542e4afba2e4d8804156f
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08410264B2

Reaction notes

Loading…