Diisopropylethylamine → HCID 135800728, Verbindung

HRID 1247778Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1247778
S(=O)(=O)(O)O.[NH2:6][C:7]1[CH:11]=[N:10][N:9]2[CH2:12][CH2:13][NH:14][C:8]=12.C(N(C(C)C)C(C)C)C.[C:24]([O:28][C:29]([NH:31][CH2:32][CH2:33][C:34](ON1C(=O)CCC1=O)=[O:35])=[O:30])([CH3:27])([CH3:26])[CH3:25]>C(Cl)Cl>[C:24]([O:28][C:29]([NH:31][CH2:32][CH2:33][C:34]([NH:6][C:7]1[CH:11]=[N:10][N:9]2[CH2:12][CH2:13][NH:14][C:8]=12)=[O:35])=[O:30])([CH3:27])([CH3:26])[CH3:25]

Komponenten

5

Edukt 3

HCID 81531DiisopropylethylamineHCID 10684599Boc-Beta-Ala-OSuHCID 1358007252,3-dihydro-1H-imidazo[1,2-b]pyrazol-7-amine sulfate

Produkt 1

HCID 135800728HCID 135800728, VerbindungAusbeute 74,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 7-amino-2,3-dihydro-1H-imidazo[1,2-b]pyrazole sulfuric acid salt (2.22 g) and N-ethyldiisopropylamine (2.84 g) in methylene chloride (70 ml) was added N-[3-(tert-butoxycarbonylamino)propionyloxy]succinimide (3.15 g). The mixture was stirred at room temperature for 4 hours. The reaction mixture was washed with saturated aqueous sodium hydrogen carbonate solution, and the organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The oily residue was purified by column chromatography on silica gel eluting with 5% methanol/chloroform to give 7-[3-(tert-butoxycarbonylamino)propionyl]amino-2,3-dihydro-1H-imidazo[1,2-b]pyrazole (2.2 g) as a solid.

Aufarbeitung

  1. washThe reaction mixture was washed with saturated aqueous sodium hydrogen carbonate solution
  2. dry with materialthe organic layer was dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe oily residue was purified by column chromatography on silica gel eluting with 5% methanol/chloroform

Quellen und Nachweise

ORD-Eintrag
ord-e112db3312f442418e87c290c9d8517b
Quelldatensatz
uspto-grants-2006_10
Patentnummer
US07129232B2

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