2-Furancarbonyl chloride → HCID 178519702, Verbindung

HRID 276778Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 276778
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:10]=[C:11]([C:14]3[CH:15]=[CH:16][C:17]([N:20]4[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]4)=[N:18][CH:19]=3)[NH:12][CH:13]=2)[CH:5]=[CH:6][C:7]=1[Cl:8].[O:26]1[CH:30]=[CH:29][CH:28]=[C:27]1[C:31](Cl)=[O:32]>C(Cl)(Cl)Cl.CN(C)C1C=CN=CC=1.ClCCl>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:10]=[C:11]([C:14]3[CH:15]=[CH:16][C:17]([N:20]4[CH2:25][CH2:24][N:23]([C:31]([C:27]5[O:26][CH:30]=[CH:29][CH:28]=5)=[O:32])[CH2:22][CH2:21]4)=[N:18][CH:19]=3)[NH:12][CH:13]=2)[CH:5]=[CH:6][C:7]=1[Cl:8]

Komponenten

6

Edukt 2

HCID 682422-Furancarbonyl chlorideHCID 178477952{5-[4-(3,4-dichloro-phenyl)-1H-imidazol-2-yl]-pyridin-2-yl}-piperazine

Produkt 1

HCID 178519702HCID 178519702, VerbindungAusbeute 59 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6212ChloroformLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of {5-[4-(3,4-dichloro-phenyl)-1H-imidazol-2-yl]-pyridin-2-yl}-piperazine (150 mg, 0.40 mmol) in chloroform (10 ml) was added 4-dimethylaminopyridine (50 mg, 0.44 mmol, 1.1 equiv), followed by furan-2-carbonyl chloride (40 μl, 53 mg, 0.44 mmol, 1.1 equiv). The reaction was stirred for two days at room temperature. The reaction mixture was then diluted with dichloromethane (10 ml) and extracted with an aqueous solution of saturated sodium bicarbonate (2×10 ml), dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. Purification of the residue by flash column chromatography (20% ethyl acetate/hexanes grading to 100% ethyl acetate, then 10% methanol/dichloromethane) provided the desired product (110 mg, 59%).

Aufarbeitung

  1. extractionextracted with an aqueous solution of saturated sodium bicarbonate (2×10 ml)
  2. dry with materialdried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customPurification of the residue by flash column chromatography (20% ethyl acetate/hexanes grading to 100% ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-adc805a43a6a4d9d9185e8cf3644ee5b
Quelldatensatz
uspto-grants-2002_03
Patentnummer
US06355635B1

Notizen zur Reaktion

Wird geladen…