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Potassium Iodide → 3-[2-[4-[(2-fluorophenyl)(2-phenylhydrazono)methyl]-1-piperazinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

HRID 2051015
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2051015
Cl[CH2:2][CH2:3][C:4]1[C:9](=[O:10])[N:8]2[CH:11]=[CH:12][CH:13]=[CH:14][C:7]2=[N:6][C:5]=1[CH3:15].[F:16][C:17]1[CH:30]=[CH:29][CH:28]=[CH:27][C:18]=1[C:19]([N:21]1[CH2:26][CH2:25][NH:24][CH2:23][CH2:22]1)=O.[C:31]1([NH:37][NH2:38])[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1.C(=O)([O-])[O-].[Na+].[Na+].[I-].[K+]>CC(C)CC(=O)C>[F:16][C:17]1[CH:30]=[CH:29][CH:28]=[CH:27][C:18]=1[C:19](=[N:38][NH:37][C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)[N:21]1[CH2:26][CH2:25][N:24]([CH2:2][CH2:3][C:4]2[C:9](=[O:10])[N:8]3[CH:11]=[CH:12][CH:13]=[CH:14][C:7]3=[N:6][C:5]=2[CH3:15])[CH2:23][CH2:22]1
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Komponenten

7

Edukt 5

HCID 4875Potassium IodideHCID 7516PhenylhydrazineHCID 10340Sodium CarbonateHCID 544862(2-Fluoro-phenyl)-piperazin-1-yl-methanoneHCID 8178663-(2-Chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

Produkt 1

HCID 56619699
3-[2-[4-[(2-fluorophenyl)(2-phenylhydrazono)methyl]-1-piperazinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7909Methyl Isobutyl KetoneLösungsmittel

Versuchsvorschrift

A mixture of 4.5 parts of 3-(2-chloroethyl)-2-methyl-4H-pyrido-[1,2-a]pyrimidin-4-one, 6 parts of 1-(2-fluorobenzoyl)piperazine, 2-phenylhydrazine, 5.04 parts of sodium carbonate, 0.1 parts of potassium iodide and 120 parts of 4-methyl-2-pentanone was stirred overnight at reflux temperature. The inorganic salts were filtered off and the filtrate was evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (95:5 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from 2-propanol. The product was filtered off and dried, yielding 2.5 parts (25.8) of 3-[2-[4-[(2-fluorophenyl)(2-phenylhydrazono)methyl]-1-piperazinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one; mp. 180° C. (int. 10).

Aufarbeitung

  1. temperatureat reflux temperature
  2. filtrationThe inorganic salts were filtered off
  3. customthe filtrate was evaporated
  4. customThe residue was purified by column chromatography over silica gel using
  5. additiona mixture of trichloromethane and methanol (95:5 by volume) as eluent
  6. customThe pure fractions were collected
  7. customthe eluent was evaporated
  8. customThe residue was crystallized from 2-propanol
  9. filtrationThe product was filtered off
  10. customdried

Quellen und Nachweise

ORD-Eintrag
ord-79145bf9ba0c47d08a5d7cfbfc7b49b9
Quelldatensatz
uspto-grants-1991_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05015740

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