Ethyl Acetate → 5-[(diisobutylamino)methyl]-1-(3-{methyl[2-(2-pyridinyl)ethyl]amino}propyl)-N-(3,4,5-trimethoxyphenyl)-1H-benzimidazol-2-amine

HRID 1727422Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1727422
[H-].[Al+3].[Li+].[H-].[H-].[H-].[CH2:7]([N:11]([CH2:49][CH:50]([CH3:52])[CH3:51])[C:12]([C:14]1[CH:48]=[CH:47][C:17]2[N:18]([CH2:34][CH2:35][CH2:36][N:37]([CH3:46])[CH2:38][CH2:39][C:40]3[CH:45]=[CH:44][CH:43]=[CH:42][N:41]=3)[C:19]([NH:21][C:22]3[CH:27]=[C:26]([O:28][CH3:29])[C:25]([O:30][CH3:31])=[C:24]([O:32][CH3:33])[CH:23]=3)=[N:20][C:16]=2[CH:15]=1)=O)[CH:8]([CH3:10])[CH3:9].C(OCC)(=O)C>O1CCCC1>[CH2:7]([N:11]([CH2:12][C:14]1[CH:48]=[CH:47][C:17]2[N:18]([CH2:34][CH2:35][CH2:36][N:37]([CH3:46])[CH2:38][CH2:39][C:40]3[CH:45]=[CH:44][CH:43]=[CH:42][N:41]=3)[C:19]([NH:21][C:22]3[CH:23]=[C:24]([O:32][CH3:33])[C:25]([O:30][CH3:31])=[C:26]([O:28][CH3:29])[CH:27]=3)=[N:20][C:16]=2[CH:15]=1)[CH2:49][CH:50]([CH3:51])[CH3:52])[CH:8]([CH3:10])[CH3:9]

Komponenten

5

Edukt 3

HCID 8857Ethyl AcetateHCID 10196994N,N-diisobutyl-1-{3-[methyl(2-pyridin-2-ylethyl)amino]propyl}-2-[(3,4,5-trimethoxyphenyl)amino]-1H-benzimidazole-5-carboxamideHCID 21226445Aluminium lithium hydride

Produkt 1

HCID 575676335-[(diisobutylamino)methyl]-1-(3-{methyl[2-(2-pyridinyl)ethyl]amino}propyl)-N-(3,4,5-trimethoxyphenyl)-1H-benzimidazol-2-amine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

A molar solution of lithium aluminium hydride in tetrahydrofuran (0.83 ml, 5 eq) is added dropwise to a solution of N,N-diisobutyl-1-{3-[methyl(2-pyridin-2-ylethyl) amino]propyl}-2-[(3,4,5-trimethoxyphenyl)amino]-1H-benzimidazole-5-carboxamide (105 mg, 1 eq. prepared according to Example A1) cooled down to 0° C., in tetrahydrofuran (3 ml). After stirring for 15 minutes at 0° C., the mixture is heated at 60° C. for 3 hours then cooled down to 0° C. and hydrolysed. After adding ethyl acetate, decanting and extraction, the combined organic phases are washed with salt water, followed by drying over sodium sulphate and concentrating under reduced pressure. Purification by flash chromatography on silica gel (eluent: 100% dichloromethane to dichloromethane/methanol 9:1) produces the expected compound in the form of a foam (63 mg, 62% yield).

Aufarbeitung

  1. temperaturethe mixture is heated at 60° C. for 3 hours
  2. temperaturethen cooled down to 0° C.
  3. customdecanting
  4. extractionextraction
  5. washthe combined organic phases are washed with salt water
  6. dry with materialby drying over sodium sulphate
  7. concentrationconcentrating under reduced pressure
  8. customPurification by flash chromatography on silica gel (eluent: 100% dichloromethane to dichloromethane/methanol 9:1)

Quellen und Nachweise

ORD-Eintrag
ord-33abe81a08544fd2ad1c5dcbb17a925d
Quelldatensatz
uspto-grants-2009_02
Patentnummer
US07495110B2

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