Diisopropylethylamine → Tert-butyl 4-[[benzyl-[2-oxo-2-(2-pyridyl)ethyl]amino]methyl]-4-hydroxy-piperidine-1-carboxylate

HRID 712970

Reaktionsgleichung

Reaktionsgleichung von HRID 712970
[CH2:1]([NH:8][CH2:9][C:10]1([OH:23])[CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12][CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(C(C)C)CC)(C)C.Br.Br[CH2:35][C:36]([C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][N:39]=1)=[O:37]>CN(C=O)C.C(OCC)(=O)C>[CH2:1]([N:8]([CH2:9][C:10]1([OH:23])[CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:20])([CH3:22])[CH3:21])=[O:17])[CH2:12][CH2:11]1)[CH2:35][C:36](=[O:37])[C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][N:39]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

6

Edukt 3

HCID 81531DiisopropylethylamineHCID 27762312-Bromo-1-(2-pyridinyl)-1-ethanone hydrobromideHCID 68291338Tert-butyl 4-((benzylamino)methyl)-4-hydroxypiperidine-1-carboxylate

Produkt 1

HCID 68291423Tert-butyl 4-[[benzyl-[2-oxo-2-(2-pyridyl)ethyl]amino]methyl]-4-hydroxy-piperidine-1-carboxylateAusbeute 92 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To tert-butyl 4-[(benzylamino)methyl]-4-hydroxy-piperidine-1-carboxylate (3.0 g, 9.36 mmol) in DMF (19 mL) at 0° C. was added diisopropyl ethylamine (3.4 mL, 19.66 mmol) followed by the addition of 2-bromo-1-(2-pyridyl)ethanone hydrobromide salt (2.6 g, 9.36 mmol) and reaction mixture was stirred for 2 hours warming from 0° C. to 10° C. The reaction mixture was diluted with ethyl acetate and washed with sat. NaHCO3 solution and then brine. The organics were separated, dried over Na2SO4, filtered and concentrated in vacuo to give a residue, which was purified using silica gel column chromatography using MeOH/DCM (1-15%) as eluent to give tert-butyl 4-[[benzyl-[2-oxo-2-(2-pyridyl)ethyl]amino]methyl]-4-hydroxy-piperidine-1-carboxylate (3.8, 92%). ESI-MS m/z calc. 439.2. found 440.0 (M+1)+; Retention time: 1.12 minutes (3 min run).

Aufarbeitung

  1. temperaturewarming from 0° C. to 10° C
  2. washwashed with sat. NaHCO3 solution
  3. customThe organics were separated
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customto give a residue, which
  8. customwas purified

Quellen und Nachweise

ORD-Eintrag
ord-9c154f7b8f3a4db8bdc45ae2bfcdf926
Quelldatensatz
uspto-grants-2015_11
Patentnummer
US09181273B2

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