Ammonia → 3-Methoxyestra-2,5(10)-dien-17beta-ol

HRID 1415034

Reaktionsgleichung

Reaktionsgleichung von HRID 1415034
[CH3:1][O:2][C:3]1[CH:20]=[CH:19][C:18]2[C@@H:17]3[C@H:8]([C@H:9]4[C@@:13]([CH2:15][CH2:16]3)([CH3:14])[C@@H:12]([OH:21])[CH2:11][CH2:10]4)[CH2:7][CH2:6][C:5]=2[CH:4]=1.[Li].N.[Cl-].[NH4+]>O1CCCC1.O.C(O)C>[CH3:1][O:2][C:3]1[CH2:4][C:5]2[CH2:6][CH2:7][C@@H:8]3[C@@H:17]([C:18]=2[CH2:19][CH:20]=1)[CH2:16][CH2:15][C@@:13]1([CH3:14])[C@H:9]3[CH2:10][CH2:11][C@@H:12]1[OH:21]

Komponenten

8

Versuchsvorschrift

Add dl-3-methoxyestra-1,3,5(10)-trien-17β-ol (1.3 g) in tetrahydrofuran (40 ml) to a stirred solution of lithium (1.3 g) in liquid ammonia (100 ml). After 15 minutes add ethanol (20 ml) dropwise and when the blue color is discharged add ammonium chloride and water and extract the mixture with ether. Wash, dry and evaporate the ethereal solution and recrystallize the residue from ethanol-hexane to obtain dl-3-methoxyestra-2,5(10)-dien-17β-ol (0.84 g), m.p. 120°-123°; infrared absorption maxima at 3.25 μ, 5.8 μ, 6 μ.

Aufarbeitung

  1. extractionextract the mixture with ether
  2. washWash
  3. customdry
  4. customevaporate the ethereal solution
  5. customrecrystallize the residue from ethanol-hexane

Quellen und Nachweise

ORD-Eintrag
ord-af236d2dc2e74c6a90062a74e8f1b137
Quelldatensatz
uspto-grants-1977_01
Patentnummer
US04002746

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