Sodium Hydroxide → 2-(5-(3-((4-formyl-6-methoxypyridin-3-yloxy)methyl)pyridin-2-yl)-1H-pyrazol-1-yl)acetic acid
Reaction equation
[CH:1]([C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[CH:5][C:4]=1[O:11][CH2:12][C:13]1[C:14]([C:19]2[N:23]([CH2:24][C:25]([O:27]CC)=[O:26])[N:22]=[CH:21][CH:20]=2)=[N:15][CH:16]=[CH:17][CH:18]=1)=[O:2].[OH-].[Na+]>CO.C1COCC1>[CH:1]([C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[CH:5][C:4]=1[O:11][CH2:12][C:13]1[C:14]([C:19]2[N:23]([CH2:24][C:25]([OH:27])=[O:26])[N:22]=[CH:21][CH:20]=2)=[N:15][CH:16]=[CH:17][CH:18]=1)=[O:2]Participants
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
To ethyl 2-(5-(3-((4-formyl-6-methoxypyridin-3-yloxy)methyl)pyridin-2-yl)-1H-pyrazol-1-yl)acetate (182 mg, 0.46 mmol, 1 eq.) in a mixture of MeOH/THF (1/5, 12.0 mL) was added NaOH (2N, 2.3 mL, 4.6 mmol, 10 eq.). The mixture was stirred at rt for 2 h, acidified to pH 3, and extracted with EtOAc (3×20 mL). The combined organic layers were dried over Na2SO4 and concentrated to give 2-(5-(3-((4-formyl-6-methoxypyridin-3-yloxy)methyl)pyridin-2-yl)-1H-pyrazol-1-yl)acetic acid (135.1 mg, 80%) as a white solid. 1H NMR (400 MHz, CDCl3) δ 10.42 (s, 1H), 8.71 (d, J=4.7 Hz, 1H), 8.13 (d, J=7.8 Hz, 1H), 7.97 (s, 1H), 7.66 (d, J=1.6 Hz, 1H), 7.52 (dd, J=7.9, 4.9 Hz, 1H), 7.13 (s, 1H), 6.56 (d, J=1.7 Hz, 1H), 5.31 (s, 2H), 5.14 (s, 2H), 3.91 (s, 3H). LRMS (M+H+) m/z 369.1.
Workup
- extractionextracted with EtOAc (3×20 mL)
- dry with materialThe combined organic layers were dried over Na2SO4
- concentrationconcentrated
Sources & evidence
- ORD record
- ord-32706f60d8e0420aa4a6845ee84988e6
- Source dataset
- uspto-grants-2015_04
- Patent number
- US09012450B2
Reaction notes
Loading…