Potassium Carbonate → 4-(2-Formyl-4-iodo-phenoxymethyl)-piperidine-1-carboxylic acid tert-butyl ester

HRID 1095066Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1095066
[I:1][C:2]1[CH:9]=[C:6]([CH:7]=[O:8])[C:5]([OH:10])=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].[C:17]([O:21][C:22]([N:24]1[CH2:29][CH2:28][CH:27]([CH2:30]Br)[CH2:26][CH2:25]1)=[O:23])([CH3:20])([CH3:19])[CH3:18]>CN(C)C=O.C(OCC)(=O)C>[C:17]([O:21][C:22]([N:24]1[CH2:29][CH2:28][CH:27]([CH2:30][O:10][C:5]2[CH:4]=[CH:3][C:2]([I:1])=[CH:9][C:6]=2[CH:7]=[O:8])[CH2:26][CH2:25]1)=[O:23])([CH3:20])([CH3:18])[CH3:19]

Komponenten

6

Edukt 3

HCID 11430Potassium CarbonateHCID 2526125-IodosalicylaldehydeHCID 15512811tert-Butyl 4-(bromomethyl)piperidine-1-carboxylate

Produkt 1

HCID 577431634-(2-Formyl-4-iodo-phenoxymethyl)-piperidine-1-carboxylic acid tert-butyl esterAusbeute 63 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a solution of 5-iodosalicylaldehyde (2 g, 8.2 mmol) (Aldrich) in N,N-dimethylformamide (20 mL) was added anhydrous K2CO3 (1.15 g, 8.2 mmol), and 4-bromomethyl-piperidine -1-carboxylic acid tert-butyl ester (2.3 g, 8.2 mmol, Pharmacore). The reaction mixture was heated at 60° C. for 18 h. The crude was cooled to room temperature, diluted with ethyl acetate, washed with water, brine. The organic layer was separated, dried over MgSO4, concentrated to give 4-(2-formyl-4-iodo-phenoxymethyl)-piperidine-1-carboxylic acid tert-butyl ester (Yield 2.3 g, 63%).

Aufarbeitung

  1. temperatureThe crude was cooled to room temperature
  2. washwashed with water, brine
  3. customThe organic layer was separated
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-af5f65185357411ead3f1547b498ad26
Quelldatensatz
uspto-grants-2012_03
Patentnummer
US08134001B2

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