Lawesson's reagent → 2-[[5-{5H-Dibenzo[a,d]cyclohepten-5-yl}-3,4-dihydro-2-oxo-4-thioxo-1(2H)-pyrimidinyl]methyl]-4-thiazolecarboxylic acid, ethyl ester

HRID 1275879Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1275879
[CH:1]1[C:11]2[CH:10]=[CH:9][C:8]3[CH:12]=[CH:13][CH:14]=[CH:15][C:7]=3[CH:6]([C:16]3[C:17](=O)[NH:18][C:19](=[O:33])[N:20]([CH2:22][C:23]4[S:24][CH:25]=[C:26]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[N:27]=4)[CH:21]=3)[C:5]=2[CH:4]=[CH:3][CH:2]=1.COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:44])=CC=1>O1CCOCC1.C(OCC)(=O)C>[CH:3]1[C:4]2[CH:10]=[CH:9][C:8]3[CH:12]=[CH:13][CH:14]=[CH:15][C:7]=3[CH:6]([C:16]3[C:17](=[S:44])[NH:18][C:19](=[O:33])[N:20]([CH2:22][C:23]4[S:24][CH:25]=[C:26]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[N:27]=4)[CH:21]=3)[C:5]=2[CH:11]=[CH:1][CH:2]=1

Komponenten

5

Edukt 2

HCID 87949Lawesson's reagentHCID 117334062-[[5-{5H-Dibenzo[a,d]cyclohepten-5-yl}-3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl]methyl]-4-thiazolecarboxylic acid, ethyl ester

Produkt 1

HCID 867561222-[[5-{5H-Dibenzo[a,d]cyclohepten-5-yl}-3,4-dihydro-2-oxo-4-thioxo-1(2H)-pyrimidinyl]methyl]-4-thiazolecarboxylic acid, ethyl ester

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8857Ethyl AcetateLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

A mixture of the product of step (iv) (2.1 g) and Lawesson's reagent (1.78 g) in dry 1,4-dioxane (36 ml) was heated at reflux for 16 hours. After cooling, the reaction mixture was diluted with ethyl acetate and washed with water. The organic layer was dried MgSO4) and evaporated under reduced pressure. Purification was by chromatography eluting with 50% ethyl acetate in isohexane. Yield 1.5 g.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux for 16 hours
  3. temperatureAfter cooling
  4. washwashed with water
  5. customevaporated under reduced pressure
  6. customPurification
  7. washeluting with 50% ethyl acetate in isohexane

Quellen und Nachweise

ORD-Eintrag
ord-6e0b58f8a4254d629a76e3e528c4cef4
Quelldatensatz
uspto-grants-2000_12
Patentnummer
US06162808

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