Sodium Hydroxide → Sodium 3-[5-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indazol-1-yl]propanoate

HRID 2189810Notes

Reaction equation

[C:1]([C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:19]=[C:20]4[C:24](=[CH:25][CH:26]=3)[N:23]([CH2:27][CH2:28][C:29]([O:31]CC)=[O:30])[N:22]=[CH:21]4)[N:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH:10]([CH3:12])[CH3:11])#[N:2].[OH-].[Na+:35]>C(O)C>[C:1]([C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:19]=[C:20]4[C:24](=[CH:25][CH:26]=3)[N:23]([CH2:27][CH2:28][C:29]([O-:31])=[O:30])[N:22]=[CH:21]4)[N:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH:10]([CH3:12])[CH3:11])#[N:2].[Na+:35]

Participants

Conditions

Temperature: 80 °C

Procedure

Ethyl 3-[5-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indazol-1-yl]propanoate (D58) (99 mg, 0.22 mmol) was dissolved in ethanol (2 ml) and 2M aq NaOH (0.55 ml) was added. The reaction was heated at 80° C. for 30 minutes and the reagents dissolved. The reaction mixture was cooled to room temperature and then left overnight. The resultant precipitate was filtered, washed with water and then ether, dried by heating in vacuo to afford the title compound (29.1 mg). δH (methanol-d4, 400 MHz) 1.46 (6H, d), 2.78, (2H, t), 4.71 (2H, t), 4.88-5.00 (estimate 1H [partially overlapping water peak], m). 7.43 (1H, d), 7.83 (1H, d), 8.10-8.17 (2H, m), 8.37-8.49 (2H, m), 8.56 (1H, s), MS (ES): C22H19N5O4 requires 417; found (MH+) 418.

Workup

dissolutionthe reagents dissolved
temperatureThe reaction mixture was cooled to room temperature
filtrationThe resultant precipitate was filtered
washwashed with water
dry with materialether, dried
temperatureby heating in vacuo

Sources & evidence

ORD record: ord-5f18fe91305b4efc9af557a410e3144f
Source dataset: uspto-grants-2012_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08324254B2

Reaction notes

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