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

HRID 2189811Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2189811
[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+]>C(O)C.C1COCC1>[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]([OH: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]

Komponenten

5

Edukt 2

HCID 14798Sodium HydroxideHCID 59316802Ethyl 3-[5-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indazol-1-yl]propanoate

Produkt 1

HCID 250625593-[5-(5-{3-Cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indazol-1-yl]propanoic acidAusbeute 28,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

Ethyl 3-[5-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indazol-1-yl]propanoate (D58) (523 mg, 1.17 mmol) was dissolved in mixture of ethanol (20 ml) and THF (10 ml) by warming at 50° C. Cooled to RT and added 2N NaOH (1 ml, 2 mmol) and left standing at RT for 30 minutes. Evaporated off the solvent, added water (50 ml) and washed with EtOAc (50 ml). Acidified aqueous layer and extracted product into EtOAc (50 ml). The EtOAc layer was dried (MgSO4) and the solvent evaporated. Triturating with diethyl ether gave the title compound (139 mg) as a beige solid. δH (d6-DMSO, 400 MHz): 1.39 (6H, d), 2.90 (2H, t), 4.66 (2H, t), 4.94-5.03 (1H, m), 7.57 (1H, d), 7.90 (1H, d), 8.07 (1H, dd), 8.28 (1H, d), 8.42 (1H, dd), 8.54 (2H, dd), 12.35 (1H, broad s). MS (ES): C22H19N5O4 requires 417; found (MH+) 418.

Aufarbeitung

  1. temperatureCooled to RT
  2. waitleft
  3. customEvaporated off the solvent
  4. additionadded water (50 ml)
  5. washwashed with EtOAc (50 ml)
  6. extractionAcidified aqueous layer and extracted product into EtOAc (50 ml)
  7. dry with materialThe EtOAc layer was dried (MgSO4)
  8. customthe solvent evaporated
  9. customTriturating with diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-1c3015aebecb419790a75b2d39763f32
Quelldatensatz
uspto-grants-2012_12
Patentnummer
US08324254B2

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