Diethyl Ether → 4-(2-amino-3H-imidazol-4-yl)-2,3-dichloro-4,5,6,7-tetrahydro-1H-pyrrolo[2,3-c]azepin-8-one

HRID 29790

Reaktionsgleichung

Reaktionsgleichung von HRID 29790
[Cl:1][C:2]1[NH:13][C:5]2[C:6](=[O:12])[NH:7][CH2:8][CH2:9][CH:10](O)[C:4]=2[C:3]=1[Cl:14].S(O)(O)(=O)=O.[NH2:20][C:21]1[NH:22][CH:23]=[CH:24][N:25]=1.CCOCC>CS(O)(=O)=O>[NH2:20][C:21]1[NH:25][C:24]([CH:10]2[CH2:9][CH2:8][NH:7][C:6](=[O:12])[C:5]3[NH:13][C:2]([Cl:1])=[C:3]([Cl:14])[C:4]2=3)=[CH:23][N:22]=1

Komponenten

5

Edukt 3

HCID 3283Diethyl EtherHCID 135136Bis(2-amino-1H-imidazole) sulphateHCID 597892292,3-dichloro-4-hydroxy-4,5,6,7-tetrahydro-1H-pyrrolo[2,3-c]azepin-8-one

Produkt 1

HCID 597891934-(2-amino-3H-imidazol-4-yl)-2,3-dichloro-4,5,6,7-tetrahydro-1H-pyrrolo[2,3-c]azepin-8-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6395Methanesulfonic AcidLösungsmittel

Reaktionsbedingungen

Temperatur
45 °C

Versuchsvorschrift

To a solution of 2,3-dichloro-4-hydroxy-4,5,6,7-tetrahydro-1H-pyrrolo[2,3-c]azepin-8-one (60 mg, 0.256 mmol), prepared as in reference 2, in methanesulfonic acid (0.5 mL) is added 2-aminoimidazole sulfate (40.5 mg, 0.153 mmol). The mixture is stirred at 45° C. overnight, cooled to room temperature and Et2O (5 mL) is added resulting in brown oil. After discarding the supernatant, the oil is purified by silica gel column chromatography and eluted with MeOH—CH2Cl2 to give 4-(2-amino-3H-imidazol-4-yl)-2,3-dichloro-4,5,6,7-tetrahydro-1H-pyrrolo[2,3-c]azepin-8-one; 1H NMR (Methanol-d4) δ 2.09-2.17 (m, 1H), 2.23-2.31 (m, 1H), 3.20-3.29 (m, 2H), 4.23 (t, 1H, J=3.6 Hz), 6.18 (s, 1H); m/z [M++1] 300.0.

Aufarbeitung

  1. temperaturecooled to room temperature
  2. customresulting in brown oil
  3. customthe oil is purified by silica gel column chromatography
  4. washeluted with MeOH—CH2Cl2

Quellen und Nachweise

ORD-Eintrag
ord-0c3cf8259ecf4237833c40d66f62a5fb
Quelldatensatz
uspto-grants-2008_09
Patentnummer
US07423031B2

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