1,2-Dichloroethane → 3-t-Butoxycarbonylamino-2-(RS)-[(Naphth-2-ylmethyl)-1H-imidazol-5-yl]acetylamino-propionic acid methyl ester

HRID 1741470Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1741470
Cl.[CH:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[CH:5]=[CH:4][C:3]=1[CH2:12][N:13]1[C:17]([CH2:18][C:19]([OH:21])=O)=[CH:16][N:15]=[CH:14]1.[CH3:22][O:23][C:24](=[O:36])[CH:25]([NH2:35])[CH2:26][NH:27][C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29].C1C=C2C(N(O)N=NC2=CC=1)=O.C(N(CC)CC)C.C(Cl)CCl>CN(C=O)C.CCOC(C)=O>[CH3:22][O:23][C:24](=[O:36])[CH:25]([NH:35][C:19](=[O:21])[CH2:18][C:17]1[N:13]([CH2:12][C:3]2[CH:4]=[CH:5][C:6]3[C:11](=[CH:10][CH:9]=[CH:8][CH:7]=3)[CH:2]=2)[CH:14]=[N:15][CH:16]=1)[CH2:26][NH:27][C:28]([O:30][C:31]([CH3:32])([CH3:34])[CH3:33])=[O:29]

Komponenten

8

Edukt 5

HCID 111,2-DichloroethaneHCID 8471TriethylamineHCID 730263-hydroxy-1,2,3-benzotriazin-4(3H)-oneHCID 3442239Methyl 2-amino-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoateHCID 702062051-(2-naphthylmethyl)-1H-imidazol-5-ylacetic acid hydrochloride

Produkt 1

HCID 675717173-t-Butoxycarbonylamino-2-(RS)-[(Naphth-2-ylmethyl)-1H-imidazol-5-yl]acetylamino-propionic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a solution of 2-[l-(Naphth-2-ylmethyl)-1H-imidazol-5-yl]acetic acid hydrochloride (3.83 g, 12.7 mmol), 3-t-butoxycarbonylamino-2(R,S)- aminopropionic acid methyl ester (3.33 g, 15.3 mmol), HOOBT (2.30 g, 14.1 mmol), and triethylamine (5.80 ml, 42.0 mmol) in DMF (150 ml) at 0° C., was added EDC (2.67 g, 13.9 mmol). The reaction was stirred at room temperature for 18 hrs, diluted with EtOAc and the organic layer washed with sat. aq NaHCO3, brine, dried (Na2SO4), and the solvent evaporated in vacuo. The residue was chromatographed (SiO2, 5% MeOH in CH2Cl2) to afford the title compound as a white solid.

Aufarbeitung

  1. washthe organic layer washed with sat. aq NaHCO3, brine
  2. dry with materialdried (Na2SO4)
  3. customthe solvent evaporated in vacuo
  4. customThe residue was chromatographed (SiO2, 5% MeOH in CH2Cl2)

Quellen und Nachweise

ORD-Eintrag
ord-1719258bfaf7426085c3f2ab912e3158
Quelldatensatz
uspto-grants-1999_10
Patentnummer
US05972984

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