Potassium Iodide → Lorcainide Hydrochloride

HRID 1706745Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1706745
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]([CH:18]2[CH2:23][CH2:22][NH:21][CH2:20][CH2:19]2)[C:9](=[O:17])[CH2:10][C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=[CH:4][CH:3]=1.C(=O)([O-])[O-].[Na+].[Na+].[I-].[K+].Br[CH:33]([CH3:35])[CH3:34]>CC(=O)C.C(O)CCC>[ClH:1].[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([N:8]([CH:18]2[CH2:23][CH2:22][N:21]([CH:33]([CH3:35])[CH3:34])[CH2:20][CH2:19]2)[C:9](=[O:17])[CH2:10][C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=[CH:6][CH:7]=1

Komponenten

7

Edukt 4

HCID 4875Potassium IodideHCID 63582-Bromopropane2×HCID 10340Sodium CarbonateHCID 162188N-(4-Chlorophenyl)-N-4-piperidinylbenzeneacetamide

Produkt 1

HCID 6917855Lorcainide Hydrochloride

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 180AcetoneLösungsmittelHCID 2631-ButanolLösungsmittel

Versuchsvorschrift

To a stirred suspension of 5 parts of N-(4-chlorophenyl)-N-(4-piperidinyl)benzeneacetamide, 5 parts of sodium carbonate, a few crystals of potassium iodide in 200 parts of butanol is added dropwise 4 parts of 2-bromopropane at room temperature. After the addition is complete, the whole is stirred and refluxed for 20 hours. Then the second portion of 4 parts of 2-bromopropane is added and stirring and refluxing is continued for another 19 hours. The reaction mixture is cooled, filtered and the filtrate is evaporated. From the oily free base, the hydrochloride salt is prepared in the conventional manner in 1,1'-oxybisethane and 2-propanone. The precipitated solid salt is filtered off and crystallized from a mixture of 2-propanone and 2-propanol, yielding 2 parts of N-(4-chlorophenyl)-N-[1-(1-methylethyl)-4-piperidinyl]benzeneacetamide hydrochloride; mp. 263° C.

Aufarbeitung

  1. additionAfter the addition
  2. temperaturerefluxed for 20 hours
  3. stirringstirring
  4. temperaturerefluxing
  5. temperatureThe reaction mixture is cooled
  6. filtrationfiltered
  7. customthe filtrate is evaporated
  8. filtrationThe precipitated solid salt is filtered off
  9. customcrystallized from a mixture of 2-propanone and 2-propanol

Quellen und Nachweise

ORD-Eintrag
ord-4b6388006e20400593b6f71b765938bc
Quelldatensatz
uspto-grants-1980_06
Patentnummer
US04208418

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