Tert-Butylamine → Urea, N-(1,1-dimethylethyl)-N(sup 1)-(5-(2-fluorophenyl)-2,3-dihydro-1-methyl-2-oxo-1H-1,4-benzodiazepin-7-yl)-

HRID 1278477Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1278477
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([CH3:12])[C:10](=[O:13])[CH2:9][N:8]=[C:7]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=3[F:20])[C:6]=2[CH:21]=1.[C:22]([NH2:26])([CH3:25])([CH3:24])[CH3:23].[CH2:27](Cl)Cl.[OH2:30]>>[C:22]([NH:26][C:27]([NH:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([CH3:12])[C:10](=[O:13])[CH2:9][N:8]=[C:7]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=3[F:20])[C:6]=2[CH:21]=1)=[O:30])([CH3:25])([CH3:24])[CH3:23]

Komponenten

4

Edukt 3

HCID 6385Tert-ButylamineHCID 922947-AminoflunitrazepamHCID 21908982Water methylene chloride

Produkt 1

HCID 3058283Urea, N-(1,1-dimethylethyl)-N(sup 1)-(5-(2-fluorophenyl)-2,3-dihydro-1-methyl-2-oxo-1H-1,4-benzodiazepin-7-yl)-

Versuchsvorschrift

A dichloroethane solution of [5-(o-fluorophenyl)-2,3-dihydro-1-methyl-2-oxo-1H-1,4-benzodiazepin-7-yl]isocyanate, obtained as described in paragraph (a) of Example 1 from 4.2 g (0.015 M) of 7-amino-5-(o-fluorophenyl)-1,3-dihydro-1-methyl-2H-1,4-benzodiazepin-2-one, is treated with excess tert.butylamine. After concentration of the mixture, the residue is taken up in methylene chloride/water and the methylene chloride solution is washed several times with water. After drying the organic phase over sodium sulphate, the sodium sulphate is filtered off and the methylene chloride is evaporated off. The residue is purified on a silica gel column (150 g of SiO2) using 40% ethyl acetate in methylene chloride as the eluting agent and crystallised from ethanol/petroleum ether. There is obtained 1-tert.butyl-3-[5-(o-fluorophenyl)-2,3-dihydro-1-methyl-2-oxo-1H-1,4-benzodiazepin-7-yl]urea which melts at 210° C. with decomposition.

Aufarbeitung

  1. washthe methylene chloride solution is washed several times with water
  2. dry with materialAfter drying the organic phase over sodium sulphate
  3. filtrationthe sodium sulphate is filtered off
  4. customthe methylene chloride is evaporated off
  5. customThe residue is purified on a silica gel column (150 g of SiO2)
  6. customcrystallised from ethanol/petroleum ether

Quellen und Nachweise

ORD-Eintrag
ord-e3c6871be42140b78001c4e8f258f757
Quelldatensatz
uspto-grants-1981_07
Patentnummer
US04281188

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