Methyl morpholine oxide → 3-(4-Isobutyl-3-(trifluoromethyl)phenyl)-4,5-dihydronaphtho[1,2-c]isoxazole-7-carbaldehyde

HRID 1506369Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1506369
[CH2:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[O:15][N:14]=[C:13]3[C:16]4[C:21]([CH2:22][CH2:23][C:12]=23)=[CH:20][C:19]([CH:24]=C)=[CH:18][CH:17]=4)=[CH:7][C:6]=1[C:26]([F:29])([F:28])[F:27])[CH:2]([CH3:4])[CH3:3].C[N+]1([O-])CC[O:34]CC1.I([O-])(=O)(=O)=O.[Na+]>C1COCC1.O.[Os](=O)(=O)(=O)=O>[CH2:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[O:15][N:14]=[C:13]3[C:16]4[C:21]([CH2:22][CH2:23][C:12]=23)=[CH:20][C:19]([CH:24]=[O:34])=[CH:18][CH:17]=4)=[CH:7][C:6]=1[C:26]([F:29])([F:28])[F:27])[CH:2]([CH3:4])[CH3:3]

Komponenten

7

Edukt 3

HCID 82029Methyl morpholine oxideHCID 23667635Sodium periodateHCID 671691843-(4-Isobutyl-3-(trifluoromethyl)phenyl)-7-vinyl-4,5-dihydronaphtho[1,2-c]isoxazole

Produkt 1

HCID 866698863-(4-Isobutyl-3-(trifluoromethyl)phenyl)-4,5-dihydronaphtho[1,2-c]isoxazole-7-carbaldehydeAusbeute 100 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 30318Osmium TetroxideKatalysatorHCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To 3-(4-isobutyl-3-(trifluoromethyl)phenyl)-7-vinyl-4,5-dihydronaphtho[1,2-c]isoxazole (Preparation 23C, 0.3 g, 0.755 mmol) in THF (2 mL) was sequentially added N-methylmorpholine N-oxide (50% in water) (0.35 mL, 0.755 mmol) and osmium tetroxide (4% in water) (0.118 mL, 0.015 mmol) at room temperature. The reaction mixture was stirred at room temperature for 60 h. Next, sodium periodate (0.242 g, 1.132 mmol) dissolved in 1.5 mL of water was added at room temperature. The heterogeneous reaction mixture was stirred at room temperature for 30 min. and the reaction mixture was partitioned between ethyl acetate (10 mL) and brine (5 mL). The ethyl acetate layer was dried over sodium sulfate and concentrated to yield 3-(4-isobutyl-3-(trifluoromethyl)phenyl)-4,5-dihydronaphtho[1,2-c]isoxazole-7-carbaldehyde (0.3 g, 0.751 mmol, 100% yield) as an off-white solid. LC/MS M+1=400.2.

Aufarbeitung

  1. customat room temperature
  2. additionwas added at room temperature
  3. stirringThe heterogeneous reaction mixture was stirred at room temperature for 30 min.
  4. customthe reaction mixture was partitioned between ethyl acetate (10 mL) and brine (5 mL)
  5. dry with materialThe ethyl acetate layer was dried over sodium sulfate
  6. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-ab929edf82914f8e95e146550d59f65d
Quelldatensatz
uspto-grants-2015_12
Patentnummer
US09216972B2

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