2,2,2-Trifluoroethanol → 1-{4-[5-Phenyl-4-(2,2,2-trifluoroethoxymethyl)-oxazol-2-yl]-piperidin-1-yl}-ethanone

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Reaktionsgleichung

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

Komponenten

Reaktionsbedingungen

Temperatur: 72 °C

Versuchsvorschrift

A solution of 1-[4-(4-chloromethyl-5-phenyl-oxazol-2-yl)-piperidin-1-yl]ethanone (30 g, 94.1 mmol), prepared as in Intermediate 3B, in 2,2,2-trifluoroethanol (450 ml) is treated with a solution of NaOH (56 g, 1412 mmol) in water (150 ml). After heating at 72° C. for 15 hours, the reaction mixture is concentrated. The residue is partitioned between EtOAc and water. The aqueous phase is reextracted once with EtOAc, and the combined organic phases are washed with saturated brine, dried (Na2SO4) and concentrated to afford 1-{4-[5-phenyl-4-(2,2,2-trifluoroethoxymethyl)-oxazol-2-yl]-piperidin-1-yl}-ethanone.

Aufarbeitung

concentrationthe reaction mixture is concentrated
customThe residue is partitioned between EtOAc and water
washthe combined organic phases are washed with saturated brine
dry with materialdried (Na2SO4)
concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag: ord-7e623cfd335e4f6d8e6ec1f823c663cb
Quelldatensatz: uspto-grants-2000_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US06090825

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