Ammonia → Benzyl 4-[(3-amino-3-oxopropyl)(tert-butoxycarbonyl)amino]piperidin-1-carboxylate

HRID 20242Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 20242
[CH2:1]([O:8][C:9]([N:11]1[CH2:16][CH2:15][CH:14]([N:17]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:18][CH2:19][C:20]([OH:22])=O)[CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CC[N:32]=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.N>CN(C=O)C>[NH2:32][C:20](=[O:22])[CH2:19][CH2:18][N:17]([C:23]([O:25][C:26]([CH3:27])([CH3:29])[CH3:28])=[O:24])[CH:14]1[CH2:13][CH2:12][N:11]([C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[O:10])[CH2:16][CH2:15]1

Komponenten

6

Edukt 4

HCID 222AmmoniaHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 68418183HCID 68418183, Verbindung

Produkt 1

HCID 68425948Benzyl 4-[(3-amino-3-oxopropyl)(tert-butoxycarbonyl)amino]piperidin-1-carboxylateAusbeute 83,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A solution of N-{1-[(benzyloxy)carbonyl]piperidin-4-yl}-N-(tert-butoxycarbonyl)-β-alanine (4.06 g) obtained in Example 45b), WSC (1.92 g) and HOBt.NH3 (1.52 g) in DMF (40 mL) was stirred overnight at room temperature, and DMF was distilled off under reduced pressure. The residue was diluted with dichloromethane, washed with an aqueous saturated sodium bicarbonate solution and saturated saline solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (from ethyl acetate/hexane=1/1 to ethyl acetate) to obtain the title compound (3.38 g, 83%) as a white amorphous powder.

Aufarbeitung

  1. distillationDMF was distilled off under reduced pressure
  2. additionThe residue was diluted with dichloromethane
  3. washwashed with an aqueous saturated sodium bicarbonate solution and saturated saline solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by basic silica gel column chromatography (from ethyl acetate/hexane=1/1 to ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-b87d82baaf8e4509a94ca62fd369f6bb
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07745623B2

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