N-Hydroxysuccinimide → Succinimido 1-[(2'-t-butoxycarbonylbiphenyl-4-yl)methyl]-2-butyl-4-hydroxymethylimidazole-5-carboxylate

HRID 265082

Reaktionsgleichung

Reaktionsgleichung von HRID 265082
[C:1]([O:5][C:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[C:14]1[CH:19]=[CH:18][C:17]([CH2:20][N:21]2[C:25]([C:26]([OH:28])=[O:27])=[C:24]([CH2:29][OH:30])[N:23]=[C:22]2[CH2:31][CH2:32][CH2:33][CH3:34])=[CH:16][CH:15]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].O[N:36]1[C:40](=[O:41])[CH2:39][CH2:38][C:37]1=[O:42]>O1CCCC1>[C:1]([O:5][C:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[C:14]1[CH:19]=[CH:18][C:17]([CH2:20][N:21]2[C:25]([C:26]([O:28][N:36]3[C:40](=[O:41])[CH2:39][CH2:38][C:37]3=[O:42])=[O:27])=[C:24]([CH2:29][OH:30])[N:23]=[C:22]2[CH2:31][CH2:32][CH2:33][CH3:34])=[CH:16][CH:15]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Komponenten

4

Edukt 2

HCID 80170N-HydroxysuccinimideHCID 190361191-[(2'-t-Butoxycarbonylbiphenyl-4-yl)methyl]-2-butyl-4-hydroxymethylimidazole-5-carboxylic acid

Produkt 1

HCID 19036239Succinimido 1-[(2'-t-butoxycarbonylbiphenyl-4-yl)methyl]-2-butyl-4-hydroxymethylimidazole-5-carboxylateAusbeute 92,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

206 mg of N,N-dicyclohexylcarbodiimide were added to a suspension of 464 mg of 1-[(2'-t-butoxycarbonylbiphenyl-4-yl)methyl]-2-butyl-4-hydroxymethylimidazole-5-carboxylic acid (prepared as described in Example 4) and 140 mg of N-hydroxysuccinimide in 10 ml of tetrahydrofuran, and the resulting mixture was stirred at room temperature for 16 hours. At the end of this time, the material which had precipitated was filtered off and the filtrate was concentrated by evaporation under reduced pressure. The concentrate was purified by column chromatography through silica gel, using a 1:15 by volume mixture of methanol and methylene chloride as the eluent, to afford 0.52 g of the title compound as crystals, melting at 107°-109° C.

Aufarbeitung

  1. customAt the end of this time, the material which had precipitated
  2. filtrationwas filtered off
  3. concentrationthe filtrate was concentrated by evaporation under reduced pressure
  4. customThe concentrate was purified by column chromatography through silica gel
  5. additionby volume mixture of methanol and methylene chloride as the eluent

Quellen und Nachweise

ORD-Eintrag
ord-0d3a34ba730c472b93fc571b09b2b8ec
Quelldatensatz
uspto-grants-1997_07
Patentnummer
US05646171

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