Triethylamine → (R)-3-[2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-ethyl]-1-(2,4-dichloro-pyrimidin-5-yl-methyl)-1-(4-ethyl-phenyl)-urea

HRID 1243223Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1243223
[Cl:1][C:2]1[N:7]=[C:6]([Cl:8])[C:5]([CH2:9][NH:10][C:11]2[CH:16]=[CH:15][C:14]([CH2:17][CH3:18])=[CH:13][CH:12]=2)=[CH:4][N:3]=1.[N+](C1C=CC([O:28][C:29](=O)[NH:30][C@H:31]([CH3:41])[CH2:32][O:33][Si:34]([C:37]([CH3:40])([CH3:39])[CH3:38])([CH3:36])[CH3:35])=CC=1)([O-])=O.C(N(CC)CC)C>C1(C)C=CC=CC=1>[C:37]([Si:34]([CH3:36])([CH3:35])[O:33][CH2:32][C@H:31]([NH:30][C:29](=[O:28])[N:10]([CH2:9][C:5]1[C:6]([Cl:8])=[N:7][C:2]([Cl:1])=[N:3][CH:4]=1)[C:11]1[CH:16]=[CH:15][C:14]([CH2:17][CH3:18])=[CH:13][CH:12]=1)[CH3:41])([CH3:40])([CH3:39])[CH3:38]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 11426039(2,4-Dichloro-pyrimidin-5-yl-methyl)-(4-ethyl-phenyl)-amineHCID 58715060(R)-[2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-ethyl]-carbamic acid 4-nitro-phenyl ester

Produkt 1

HCID 11488861(R)-3-[2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-ethyl]-1-(2,4-dichloro-pyrimidin-5-yl-methyl)-1-(4-ethyl-phenyl)-urea

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

A solution of (2,4-dichloro-pyrimidin-5-yl-methyl)-(4-ethyl-phenyl)amine (620 mg, 2.19 mmol) (from Example 38c supra), (R)-[2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-ethyl]-carbamic acid 4-nitro-phenyl ester (778 mg, 2.19 mmol) (from Example 38b supra) and triethylamine (0.93 mL, 6.6 mmol) (Allied Signal) in toluene (20 mL) was heated at reflux for 48 hours. The reaction mixture was quenched at room temperature with 1 N aqueous hydrochloric acid then extracted with ethyl acetate. The combined organic layers were successively washed with 1 N aqueous sodium hydroxide solution and brine, then dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by flash chromatography (30% ethyl acetate in hexanes) to give (R)-3-[2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-ethyl]-1-(2,4-dichloro-pyrimidin-5-yl-methyl)-1-(4-ethyl-phenyl)-urea. (Yield 383 mg, 36%).

Aufarbeitung

  1. temperatureat reflux for 48 hours
  2. customThe reaction mixture was quenched at room temperature with 1 N aqueous hydrochloric acid
  3. extractionthen extracted with ethyl acetate
  4. washThe combined organic layers were successively washed with 1 N aqueous sodium hydroxide solution and brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by flash chromatography (30% ethyl acetate in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-5a39a2a4222c4a658283050c8d385366
Quelldatensatz
uspto-grants-2006_10
Patentnummer
US07115740B2

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