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Estrone → 3-Hydroxyestra-1,3,5(10)-triene-16,17-dione 16-oxime

HRID 11307
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 11307
CC(C)([O-])C.[K+].[K].[CH3:8][C@@:9]12[C:25](=[O:26])[CH2:24][CH2:23][C@H:22]1[C@H:21]1[C@@H:12]([C:13]3[CH:14]=[CH:15][C:16]([OH:27])=[CH:17][C:18]=3[CH2:19][CH2:20]1)[CH2:11][CH2:10]2.[N:28](OCCC(C)C)=[O:29]>C(O)(C)(C)C.O>[CH3:8][C@@:9]12[C:25](=[O:26])/[C:24](=[N:28]/[OH:29])/[CH2:23][C@H:22]1[C@@H:21]1[CH2:20][CH2:19][C:18]3[CH:17]=[C:16]([OH:27])[CH:15]=[CH:14][C:13]=3[C@H:12]1[CH2:11][CH2:10]2
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 5870EstroneHCID 8053Isoamyl NitriteHCID 5462222PotassiumHCID 23665647Potassium tert-butoxide

Produkt 1

HCID 95617673-Hydroxyestra-1,3,5(10)-triene-16,17-dione 16-oxime

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962Water
Lösungsmittel
HCID 6386tert-ButanolLösungsmittel

Versuchsvorschrift

To a stirred solution of potassium tert-butoxide under an atmosphere of N2, freshly prepared by dissolving potassium metal (80 mg, 2.05 mmol) in 2 mL tert-butanol, oestrone (200 mg, 740 mmol) was added. The reaction mixture was then stirred for 1 hour at room temperature under N2 and isoamyl nitrite (180 μmol, 1.34 mmol) was added dropwise. The deep red mixture obtained was stirred overnight and then poured into water (20 mL). The resulting solution was extracted with ether (2×20 mL) and the aqueous layer was acidified with glacial acetic acid. (10 mL) to give a light yellow precipitate. This was left separating for two hours after which the solid was filtered (140 mg, 63%): mp 223–225° C. (lit. 226–227° C.);43 TLC (chloroform/acetone, 9:1) Rf 0.27 cf. Rf 0.69 (E1); IR (KBr) 3385 (NOH), 2920–2860 (aliph CH), 1735 (C═O), 1605–1500 (arom C═C) cm−1; δH (DMSO-d6, 400 MHz) 0.89 (3H, s, C-18-H3), 1.30–2.85 (11H, m), 2.70–2.81 (2H, m, C-6-H2), 6.46 (1H, d, JC-2-H,C-4-H=2.3 Hz, C-4-H), 6.52 (1H, dd, JC-1-H,C-2-H=8.4 Hz and JC-4-H,C-2-H=2.3 Hz, C-2-H), 7.05 (1H, d, JC-2-H,C-1-H=8.2 Hz, C-1-H), 9.05 (1H, s, exchanged with D2O, OH) and 12.39 (1H, s, exchanged with D2O, NOH); δc (DMSO-d6, 100.4 MHz) 14.09 (q, C-18), 25.09 (t); 25.46 (t), 26.18 (t), 29.02 (t), 30.92 (t), 37.20 (d), 43.20 (d), 44.59 (d), 48.50 (s, C-13), 112.70 (d), 114.83 (d), 125.82 (d), 129.59 (s), 136.88. (s), 154.84 (s, C-3 or C-16), 155.23 (s, C-3 or C-16) and 204.64 (s, C═O); MS m/z (FAB+) 453.2 [30, (M+H+NBA)+], 300.1 [100, (M+H)+]; MS m/z (FAB−) 451.3 [38, (M−H+NBA)−], 298.2 [100, (M−H)−]; Acc MS m/z (FAB+) 300.15963, C18H22NO3 requires 300.115997. CHN,

Aufarbeitung

  1. additionwas added
  2. customThe deep red mixture obtained
  3. stirringwas stirred overnight
  4. extractionThe resulting solution was extracted with ether (2×20 mL)
  5. custom(10 mL) to give a light yellow precipitate
  6. waitThis was left
  7. customseparating for two hours after which the solid
  8. filtrationwas filtered (140 mg, 63%)
  9. custommp 223–225° C. (lit. 226–227° C.);43 TLC (chloroform/acetone, 9:1) Rf 0.27

Quellen und Nachweise

ORD-Eintrag
ord-7423384ad4ba4b52b3db5009c5cdea3d
Quelldatensatz
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07098218B2

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