Trifluoroacetic acid → Trifluoroacetic acid

HRID 1804504Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1804504
[CH2:1]([C:5]1[O:9][N:8]=[C:7]([C:10]2[O:14][N:13]=[C:12]([C:15]3[CH:32]=[CH:31][C:18]([CH2:19][N:20]4[CH2:23][CH:22]([C:24]([O:26]C(C)(C)C)=[O:25])[CH2:21]4)=[CH:17][CH:16]=3)[N:11]=2)[C:6]=1[CH2:33][CH2:34][CH3:35])[CH:2]([CH3:4])[CH3:3].[C:36]([OH:42])([C:38]([F:41])([F:40])[F:39])=[O:37]>>[CH2:1]([C:5]1[O:9][N:8]=[C:7]([C:10]2[O:14][N:13]=[C:12]([C:15]3[CH:16]=[CH:17][C:18]([CH2:19][N:20]4[CH2:21][CH:22]([C:24]([OH:26])=[O:25])[CH2:23]4)=[CH:31][CH:32]=3)[N:11]=2)[C:6]=1[CH2:33][CH2:34][CH3:35])[CH:2]([CH3:4])[CH3:3].[C:36]([OH:42])([C:38]([F:41])([F:40])[F:39])=[O:37]

Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 58537189HCID 58537189, Verbindung

Produkt 2

HCID 6422Trifluoroacetic acidAusbeute 92 %HCID 46846913HCID 46846913, Verbindung

Versuchsvorschrift

A solution of tert-butyl 1-(4-(5-(5-isobutyl-4-propylisoxazol-3-yl)-1,2,4-oxadiazol-3-yl)benzyl)azetidine-3-carboxylate (23 mg, 0.048 mmol) in TFA (0.5 mL) was allowed to stand at rt for 2.5 hr. The volatiles were removed in vacuo and the residue was triturated with Et2O and dried to afford 1-(4-(5-(5-isobutyl-4-propylisoxazol-3-yl)-1,2,4-oxadiazol-3-yl)benzyl)azetidine-3-carboxylic acid, TFA (24 mg, 0.044 mmol, 92% yield) as a light yellow glassy solid. HPLC retention time=3.21 minutes (YMC Combi 4.6×50 mm S-5 ODS column) eluting with 10-90% aqueous methanol+0.2% phosphoric acid over a 4 minute gradient. MS: (M+H)=425.20. 1H NMR (400 MHz, MeOD) δ ppm 1.01 (m, 9H) 1.60-1.71 (m, 2H) 2.14 (m, 1H) 2.77 (m, 4H) 3.62-3.73 (m, 1H) 4.30-4.40 (m, 4H) 4.51 (s, 2H) 7.68 (d, J=7.8 Hz, 2H) 8.24 (d, J=7.8 Hz, 2H).

Aufarbeitung

  1. customThe volatiles were removed in vacuo
  2. customthe residue was triturated with Et2O
  3. customdried

Quellen und Nachweise

ORD-Eintrag
ord-233b4ab9147049a0b833eca23e9c533d
Quelldatensatz
uspto-grants-2013_01
Patentnummer
US08354398B2

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