Water → 3-chloro-4,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one

HRID 223213Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 223213
[CH3:1][N:2]1[C:8](=[O:9])[C:7]2[CH:10]=[CH:11][CH:12]=[CH:13][C:6]=2[N:5]2[CH:14]=[N:15][CH:16]=[C:4]2[CH2:3]1.[Cl:17]N1C(=O)CCC1=O.O>CN(C)C=O>[Cl:17][C:16]1[N:15]=[CH:14][N:5]2[C:6]3[CH:13]=[CH:12][CH:11]=[CH:10][C:7]=3[C:8](=[O:9])[N:2]([CH3:1])[CH2:3][C:4]=12

Komponenten

5

Edukt 3

HCID 962WaterHCID 31398ChlorosuccinimideHCID 199051164,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one

Produkt 1

HCID 205232833-chloro-4,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

5 g (23.5 mmol) of 4,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one in 30 ml of dimethylformamide are treated with 3.20 g (23.5 mmol) of N-chlorosuccinimide and stirred at room temperature for 1.5 hours and at 60° for 10 minutes. The clear brown solution is poured into about 200 ml of water and extracted three times with chloroform. The combined chloroform extracts are washed with water, dried over magnesium sulphate and evaporated. By chromatography of the residue on a silica gel column and subsequent recrystallization from ethyl acetate there is obtained 3-chloro-4,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one of melting point 193°-194°.

Aufarbeitung

  1. extractionextracted three times with chloroform
  2. washThe combined chloroform extracts are washed with water
  3. dry with materialdried over magnesium sulphate
  4. customevaporated
  5. customBy chromatography of the residue on a silica gel column and subsequent recrystallization from ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-8dc69c458f9f4209bf213feebaa9240b
Quelldatensatz
uspto-grants-1982_10
Patentnummer
US04352818

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