Trifluoroacetic acid → 1-(4-chlorophenyl)-5-cyano-2-(2,4-dichlorophenyl)-1H-imidazole-4-carboxylic acid

HRID 2215064Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2215064
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([C:13]#[N:14])=[C:11]([C:15]([O:17]C(C)(C)C)=[O:16])[N:10]=[C:9]2[C:22]2[CH:27]=[CH:26][C:25]([Cl:28])=[CH:24][C:23]=2[Cl:29])=[CH:4][CH:3]=1.FC(F)(F)C(O)=O>ClCCl>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([C:13]#[N:14])=[C:11]([C:15]([OH:17])=[O:16])[N:10]=[C:9]2[C:22]2[CH:27]=[CH:26][C:25]([Cl:28])=[CH:24][C:23]=2[Cl:29])=[CH:4][CH:3]=1

Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 11430818tert-butyl 1-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-cyano-1H-imidazole-4-carboxylate

Produkt 1

HCID 113268191-(4-chlorophenyl)-5-cyano-2-(2,4-dichlorophenyl)-1H-imidazole-4-carboxylic acidAusbeute 87 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of tert-butyl 1-(4-chlorophenyl)-2-(2,4-dichlorophenyl)-5-cyano-1H-imidazole-4-carboxylate (2.57 gram, 5.73 mmol) in dichloromethane (40 mL) is added trifluoroacetic acid and the resulting solution is stirred at room temperature for 20 hours and concentrated in vacuo. The residue is crystallised from diisopropyl ether to give pure 1-(4-chlorophenyl)-5-cyano-2-(2,4-dichlorophenyl)-1H-imidazole-4-carboxylic acid (1.95 gram, 87% yield). Melting point: 200–202° C. (dec.).

Aufarbeitung

  1. concentrationconcentrated in vacuo
  2. customThe residue is crystallised from diisopropyl ether

Quellen und Nachweise

ORD-Eintrag
ord-e2008eb52fe04ffdaff5b580214b2608
Quelldatensatz
uspto-grants-2006_09
Patentnummer
US07109216B2

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