1-(m-Tolyl)piperazine → 2-Methyl-3-[2-(4-m-tolyl-1-piperazinyl)ethyl]-7-chloro-4H-pyrido[1,2-a]pyrimidin-4-one

HRID 1657407

Reaktionsgleichung

Reaktionsgleichung von HRID 1657407
[CH3:1][C:2]1[N:3]=[C:4]2[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][N:5]2[C:6](=[O:11])[C:7]=1[CH2:8][CH2:9]Cl.[C:17]1([CH3:29])[CH:22]=[CH:21][CH:20]=[C:19]([N:23]2[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]2)[CH:18]=1>C1(C)C=CC=CC=1>[CH3:1][C:2]1[N:3]=[C:4]2[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][N:5]2[C:6](=[O:11])[C:7]=1[CH2:8][CH2:9][N:26]1[CH2:27][CH2:28][N:23]([C:19]2[CH:18]=[C:17]([CH3:29])[CH:22]=[CH:21][CH:20]=2)[CH2:24][CH2:25]1

Komponenten

4

Edukt 2

HCID 831111-(m-Tolyl)piperazineHCID 124149402-methyl-3-(2-chloroethyl)-7-chloro-4H-pyrido[1,2-a]pyrimidin-4-one

Produkt 1

HCID 124148532-Methyl-3-[2-(4-m-tolyl-1-piperazinyl)ethyl]-7-chloro-4H-pyrido[1,2-a]pyrimidin-4-oneAusbeute 39,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

A mixture of 1.3 g of 2-methyl-3-(2-chloroethyl)-7-chloro-4H-pyrido[1,2-a]pyrimidin-4-one, 2.1 g of 1-(m-tolyl)piperazine and 20 ml of toluene was refluxed for 30 hours. After completion of the reaction, the reaction mixture was filtered and the filtrate was concentrated under reduced pressure. The obtained residue was purified by means of column chromatography using alumina and recrystallized from a mixture of ethanol and n-hexane to give 0.8 g of the desired compound as pale yellow scales, m.p. 119° - 120°C.

Aufarbeitung

  1. temperaturewas refluxed for 30 hours
  2. customAfter completion of the reaction
  3. filtrationthe reaction mixture was filtered
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe obtained residue was purified by means of column chromatography
  6. customrecrystallized from a mixture of ethanol and n-hexane

Quellen und Nachweise

ORD-Eintrag
ord-b2a14c58a0274586a01eddf82c134411
Quelldatensatz
uspto-grants-1976_06
Patentnummer
US03960863

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