N,N-Dimethylaniline → 2-(4-chlorophenyl)-4-(dimethylamino)acetyl-3,4-dihydro-2H-1,4-benzothiazine hydrochloride

HRID 1198437

Reaktionsgleichung

Reaktionsgleichung von HRID 1198437
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[CH2:13][NH:12][C:11]3[CH:14]=[CH:15][CH:16]=[CH:17][C:10]=3[S:9]2)=[CH:4][CH:3]=1.CN(C)C1C=CC=CC=1.Cl.[CH3:28][N:29]([CH2:31][C:32](Cl)=[O:33])[CH3:30].C(=O)([O-])O.[Na+]>C(Cl)Cl>[ClH:1].[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[CH2:13][N:12]([C:32](=[O:33])[CH2:31][N:29]([CH3:30])[CH3:28])[C:11]3[CH:14]=[CH:15][CH:16]=[CH:17][C:10]=3[S:9]2)=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 949N,N-DimethylanilineHCID 516892Sodium BicarbonateHCID 130715242-(4-chlorophenyl)-3,4-dihydro2H-1,4-benzothiazineHCID 139949912-(Dimethylamino)acetyl chloride hydrochloride

Produkt 1

HCID 197942362-(4-chlorophenyl)-4-(dimethylamino)acetyl-3,4-dihydro-2H-1,4-benzothiazine hydrochlorideAusbeute 165,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 2-(4-chlorophenyl)-3,4-dihydro-2H-1,4-benzothiazine (0.52 g) ad N,N-dimethylaniline (0.97 g) in methylene chloride (15 ml) is added dimethylaminoacetyl chloride hydrochloride (0.63 g) under ice cooling, and the mixture is stirred at the same temperature for 2.5 hours. To the reaction mixture is added aqueous sodium hydrogen carbonate solution, and is extracted with chloroform. The chloroform layer is washed, dried and distilled to remove the solvent. The residue is treated with hydrochloric acid and the resulting salt is recrystallized from ethanol-ether to give 2-(4-chlorophenyl)-4-(dimethylamino)acetyl-3,4-dihyro-2H-1,4-benzothiazine hydrochloride (0.63 g, yield 86%).

Aufarbeitung

  1. extractionis extracted with chloroform
  2. washThe chloroform layer is washed
  3. customdried
  4. distillationdistilled
  5. customto remove the solvent
  6. additionThe residue is treated with hydrochloric acid
  7. customthe resulting salt is recrystallized from ethanol-ether

Quellen und Nachweise

ORD-Eintrag
ord-6f0ea970d22f4f9b96f624c3d8130e1f
Quelldatensatz
uspto-grants-1994_01
Patentnummer
US05281592

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