Diisopropylethylamine → 3-(2-Benzyloxy-propionylamino)-3H-imidazole-4-carboxylic acid methyl ester

HRID 57727

Reaktionsgleichung

Reaktionsgleichung von HRID 57727
[CH3:1][O:2][C:3]([C:5]1[N:6]([NH:10][C:11](=[O:21])[CH2:12][O:13][CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH:7]=[N:8][CH:9]=1)=[O:4].[CH2:22](OC(C)C(O)=O)C1C=CC=CC=1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.C1COCC1.O>[CH3:1][O:2][C:3]([C:5]1[N:6]([NH:10][C:11](=[O:21])[CH:12]([O:13][CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH3:22])[CH:7]=[N:8][CH:9]=1)=[O:4]

Komponenten

8

Versuchsvorschrift

To a solution of compound 2 (4.2 g, 29.7 mmol), 2-Benzyloxy-propionic acid (5.5 g, 29.7 mmol) and DIEA (10 mL) in a mixture of DMF (1 mL) and THF (50 mL) in ice-water bath was added HATU (13.5 g, 35.7 mmol). The resulting mixture was then stirred at ambient temperature overnight. Water (100 mL) was added. The mixture was extracted with ethyl acetate (300 mL×2). The combined organic phases were concentrated to give a crude residue, which was purified by chromatography on silica gel column (eluted with PE/EtOAc=1:1 to 1:3) to afford compound 9 (8.2 g, 91% yield) as brown oil. LC-MS: m/z 304 [M+H]+.

Aufarbeitung

  1. extractionThe mixture was extracted with ethyl acetate (300 mL×2)
  2. concentrationThe combined organic phases were concentrated
  3. customto give a crude residue, which
  4. customwas purified by chromatography on silica gel column (eluted with PE/EtOAc=1:1 to 1:3)

Quellen und Nachweise

ORD-Eintrag
ord-efc87d032fbe4100bf345dd07e40e300
Quelldatensatz
uspto-grants-2016_09
Patentnummer
US09434733B2

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