4-Chloroaniline → HCID 50943107, Verbindung

HRID 1920083Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1920083
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]([NH:10][CH:11](O)[C:12]([C:14]2[C:23]3[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=3)[CH:17]=[CH:16][CH:15]=2)=[O:13])=[O:9])=[N:6][CH:7]=1.P(Cl)(Cl)(Cl)(Cl)Cl.[Cl:31][C:32]1[CH:38]=[CH:37][C:35]([NH2:36])=[CH:34][CH:33]=1>C(Cl)(Cl)Cl.C1COCC1>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]([NH:10][CH:11]([NH:36][C:35]2[CH:37]=[CH:38][C:32]([Cl:31])=[CH:33][CH:34]=2)[C:12]([C:14]2[C:23]3[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=3)[CH:17]=[CH:16][CH:15]=2)=[O:13])=[O:9])=[N:6][CH:7]=1

Komponenten

6

Edukt 3

HCID 78124-ChloroanilineHCID 24819Phosphorus pentachlorideHCID 58149557HCID 58149557, Verbindung

Produkt 1

HCID 50943107HCID 50943107, VerbindungAusbeute 37 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6212ChloroformLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

5-bromo-N-(1-hydroxy-2-(naphthalen-1-yl)-2-oxoethyl)picolinamide 113 (0.74 g, 1.93 mmol) in chloroform (20 mL) was reacted with PCl5 (0.43 g, 1.96 mmol). The mixture was heated to 50° C. for 30 minutes and cooled to 0° C. 4-Chloroaniline 114 (0.512 g, 4.01 mmol) in THF (10 mL) was added and allowed to react for 1 hour. The reaction was quenched with water and the product was extracted with ethyl acetate. The organic solution was dried over MgSO4, filtered and concentrated onto silica gel. The product was purified by auto flash column chromatography (30 to 50% CH2Cl2: hexane) followed by titration with diethyl ether to give 5-bromo-N-(1-(4-chlorophenylamino)-2-(naphthalen-1-yl)-2-oxoethyl)picolinamide (Compound-1, 352 mg, 37%). 1H NMR (300 MHz, CDCl3): δ=8.83 (d, J=8.7 Hz, 1H), 8.50 (d, J=1.5 Hz, 1H), 8.46 (d, J=9.6 Hz, 1H), 8.39 (dd, J=1.2, 7.2 Hz, 1H), 8.07-8.03 (m, 2H), 7.93 (dd, J=2.4, 8.7 Hz, 1H), 7.89 (d, J=7.5 Hz, 1H), 7.68-7.63 (m, 1H), 7.56 (t, J=7.8 Hz, 2H), 7.16 (d, J=8.7 Hz, 2H), 7.09-7.03 (m, 1H), 6.82 (d, J=9.0 Hz, 2H) 5.41 (d, J=8.1 Hz, 1H).

Aufarbeitung

  1. temperaturecooled to 0° C
  2. customto react for 1 hour
  3. customThe reaction was quenched with water
  4. extractionthe product was extracted with ethyl acetate
  5. dry with materialThe organic solution was dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated onto silica gel
  8. customThe product was purified by auto flash column chromatography (30 to 50% CH2Cl2: hexane)

Quellen und Nachweise

ORD-Eintrag
ord-730f164881394cd7869c2ba51c03bab7
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08168795B2

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