Ethanol, 2-(aminooxy)-, hydrochloride → 2-[(E)-1-[3-(1-quinolin-6-ylcyclopropyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]ethylideneamino]oxyethanol
Reaction equation
[N:1]1[C:10]2[C:5](=[CH:6][C:7]([C:11]3([C:14]4[N:18]5[N:19]=[C:20]([C:23](=O)[CH3:24])[CH:21]=[CH:22][C:17]5=[N:16][N:15]=4)[CH2:13][CH2:12]3)=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.Cl.[NH2:27][O:28][CH2:29][CH2:30][OH:31]>C(Cl)Cl.C(O)(=O)C>[OH:31][CH2:30][CH2:29][O:28]/[N:27]=[C:23](/[C:20]1[CH:21]=[CH:22][C:17]2[N:18]([C:14]([C:11]3([C:7]4[CH:6]=[C:5]5[C:10](=[CH:9][CH:8]=4)[N:1]=[CH:2][CH:3]=[CH:4]5)[CH2:13][CH2:12]3)=[N:15][N:16]=2)[N:19]=1)\[CH3:24]Participants
5
Reactant 2
Product 1
Reagents, catalysts & solvents 2
Procedure
A solution of 1-(3-(1-(quinolin-6-yl)cyclopropyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)ethanone (30 mg, 0.09 mmol) (59.4) and 2-aminooxy-ethanol hydrochloride (intermediate S) (14 mg, 0.18 mmol) in 4 mL of DCM and 0.5 mL of acetic acid was stirred at 40° C. overnight. The solvent was removed under reduced pressure and the residue was purified by flash chromatography on silica gel eluting with a EtOAc/methanol gradient to afford the title compound. 1H-NMR (400 MHz, DMSO-d6) δ ppm 8.84 (t, 1H), 8.30 (d, 1H), 8.25 (d, 1H), 7.93-7.91 (m, 2H), 7.71-7.68 (m, 2H), 7.51 (dd, 1H), 4.73 (t, 1H), 4.23 (t, 2H), 3.65 (q, 2H), 2.02 (s, 3H), 1.78-1.75 (m, 2H), 1.68-1.64 (m, 2H). LCMS (method A): [MH]+=389, tR=4.55 min.
Workup
- customThe solvent was removed under reduced pressure
- customthe residue was purified by flash chromatography on silica gel eluting with a EtOAc/methanol gradient
Sources & evidence
- ORD record
- ord-296f6e56850d47ce98a328850c98b305
- Source dataset
- uspto-grants-2013_08
- Patent number
- US08507676B2
Reaction notes
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