1,1'-Carbonyldiimidazole → (R)-3-(5-Cyano-2-oxo-1,2-dihydro-imidazo[4,5-b]pyridin-3-yl)-3-phenyl-propionic acid ethyl ester

HRID 2175195Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2175195
[CH2:1]([O:3][C:4](=[O:23])[CH2:5][C@@H:6]([NH:13][C:14]1[C:19]([NH2:20])=[CH:18][CH:17]=[C:16]([C:21]#[N:22])[N:15]=1)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1)[CH3:2].C1N=CN([C:29](N2C=NC=C2)=[O:30])C=1.C1CCN2C(=NCCC2)CC1>C1COCC1>[CH2:1]([O:3][C:4](=[O:23])[CH2:5][C@@H:6]([N:13]1[C:14]2=[N:15][C:16]([C:21]#[N:22])=[CH:17][CH:18]=[C:19]2[NH:20][C:29]1=[O:30])[C:7]1[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=1)[CH3:2]

Komponenten

5

Edukt 3

HCID 682631,1'-CarbonyldiimidazoleHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 58497449(R)-3-(3-Amino-6-cyano-pyridin-2-ylamino)-3-phenyl-propionic acid ethyl ester

Produkt 1

HCID 58497426(R)-3-(5-Cyano-2-oxo-1,2-dihydro-imidazo[4,5-b]pyridin-3-yl)-3-phenyl-propionic acid ethyl esterAusbeute 19 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a stirred solution of (R)-3-(3-amino-6-cyano-pyridin-2-ylamino)-3-phenyl-propionic acid ethyl ester (600 mg, 1.93 mmol) in THF (20 ml) was added CDI (630 mg, 3.87 mmol) and DBU (0.12 ml, 0.77 mmol). The resulting solution was stirred at room temperature for 18 hours after which time the reaction appeared complete. Added silica gel and concentrated. The remaining solid was purified via silica gel flash column chromatography (Companion, 12 g silica gel, 30-60% EtOAc/hexanes) to give 120 mg (19%) of the title compound.

Aufarbeitung

  1. concentrationAdded silica gel and concentrated
  2. customThe remaining solid was purified via silica gel flash column chromatography (Companion, 12 g silica gel, 30-60% EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-69c5ff9435a94d8b9460d3c86ddeb614
Quelldatensatz
uspto-grants-2015_06
Patentnummer
US09062056B2

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