Acetic Acid → 2-(2-Fluoro4-(2-nitro-ethyl)-phenoxymethyl)pyridine

HRID 1691162Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1691162
CS(C)=O.[F:5][C:6]1[CH:19]=[C:18](/[CH:20]=[CH:21]/[N+:22]([O-:24])=[O:23])[CH:17]=[CH:16][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][N:11]=1.C(O)(=O)C.[BH4-].[Na+]>O>[F:5][C:6]1[CH:19]=[C:18]([CH2:20][CH2:21][N+:22]([O-:24])=[O:23])[CH:17]=[CH:16][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][N:11]=1

Komponenten

6

Edukt 4

HCID 176Acetic AcidHCID 679Dimethyl SulfoxideHCID 4311764Sodium borohydrideHCID 592551412-(2-Fluoro-4-((E)-2-nitro-vinyl)-phenoxymethyl)pyridine

Produkt 1

HCID 592550802-(2-Fluoro4-(2-nitro-ethyl)-phenoxymethyl)pyridineAusbeute 49,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

To a dimethyl sulfoxide (30.0 mL) solution of 2-(2-fluoro-4-((E)-2-nitro-vinyl)-phenoxymethyl)-pyridine (3.00 g, 10.9 mmol) described in Manufacturing Example 87-1-2 and acetic acid (3.00 mL) was added sodium borohydride (660 mg, 17.4 mmol) at room temperature while cooling appropriately under nitrogen atmosphere, which was stirred for 20 minutes at room temperature. Water was then added dropwise at room temperature while cooling appropriately. The reaction mixture was extracted with ethyl acetate, and the organic layer was washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was crystallized with a tetrahydrofuran-ethyl acetate-heptane system and filtered to obtain the title compound (1.50 g, 49.8%).

Aufarbeitung

  1. temperaturewhile cooling appropriately under nitrogen atmosphere
  2. temperaturewhile cooling appropriately
  3. extractionThe reaction mixture was extracted with ethyl acetate
  4. washthe organic layer was washed with water and saturated aqueous sodium chloride
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated under a reduced pressure
  8. customthe residue was crystallized with a tetrahydrofuran-ethyl acetate-heptane system
  9. filtrationfiltered

Quellen und Nachweise

ORD-Eintrag
ord-db96752e576f470fb60e15ee1189c8be
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08153662B2

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