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Pyridine → HCID 14497416, Verbindung

HRID 373486
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 373486
Cl.[CH3:2][O:3][C:4]1[CH:9]=[CH:8][C:7]([NH:10][NH2:11])=[CH:6][CH:5]=1.N1C=CC=CC=1.[Cl:18][C:19]1[CH:24]=[CH:23][C:22]([C:25](=O)[CH2:26][C:27](=O)[CH2:28][CH2:29][CH2:30][OH:31])=[CH:21][CH:20]=1>CO>[Cl:18][C:19]1[CH:20]=[CH:21][C:22]([C:25]2[N:10]([C:7]3[CH:8]=[CH:9][C:4]([O:3][CH3:2])=[CH:5][CH:6]=3)[N:11]=[C:27]([CH2:28][CH2:29][CH2:30][OH:31])[CH:26]=2)=[CH:23][CH:24]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 1049PyridineHCID 27239044-Methoxyphenylhydrazine hydrochlorideHCID 144974141-(4-Chlorophenyl)-6-hydroxyhexan-1,3-dione

Produkt 1

HCID 14497416HCID 14497416, VerbindungAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel3×

Versuchsvorschrift

4-Methoxyphenylhydrazine hydrochloride [35.0 grams (g), 0.20 moles] was added to CH3OH [50 milliliters (ml)] containing pyridine (20 ml). An additional amount of CH3OH (25 ml) was added to the thick resulting slurry. 1-(4-Chlorophenyl)-6-hydroxyhexan-1,3-dione (48.2 g, 0.20 moles), was added neat, followed by more CH3OH (25 ml). The slurry was stirred at room-temperature for 1.5 hours, after which time the mixture was concentrated and taken up in CHCl3 (300 ml). The CHCl3 solution was washed with 1N HCl (300 ml), dried (Na2SO4), filtered, and concentrated. The oil was decolorized (Norit) in hot diethyl ether (Et2O) (300 ml). The Et2O solution was cooled, and crystallization from Et2O (300 ml) afforded 2 (49.4 g). From the filtrate was obtained additional 2 (9.28 g), total yield 91%, mp 87.5°-88°. NMR (CDCl3) 1.7-2.3 (m, 2H, CH2CH2CH2), 2.55 (brs, 1H, OH), 2.80 (t, 2H, J=7 Hz, CH2), 3.75 (t, 2H, J=6 Hz, CH2O), 3.77 (s, 3H, OCH3), 6.28 (s, 1H, C4 -H), 6.93 (ABq, 4 H, J=12, 9, 4-OMe-C6H4), 6.9-7.3 (m, 4H, 4-Cl--C6H4); IR (KBr) 3320, 2920, 1495; MS, m/e 342 (M+), 312, 298 (100%);

Aufarbeitung

  1. concentrationafter which time the mixture was concentrated
  2. washThe CHCl3 solution was washed with 1N HCl (300 ml)
  3. dry with materialdried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. temperatureThe Et2O solution was cooled
  7. customcrystallization from Et2O (300 ml)

Quellen und Nachweise

ORD-Eintrag
ord-30be77d51e0849259d461c3807bbb817
Quelldatensatz
uspto-grants-1992_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05164381

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