Salicylic Acid → Tert-butyl 2-(2-hydroxybenzamido)propylcarbamate

HRID 85377Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 85377
[NH2:1][CH:2]([CH3:12])[CH2:3][NH:4][C:5](=[O:11])[O:6][C:7]([CH3:10])([CH3:9])[CH3:8].[OH:13][C:14]1[CH:22]=[CH:21][CH:20]=[CH:19][C:15]=1[C:16](O)=[O:17].N1C=CN=C1.C1CCC(N=C=NC2CCCCC2)CC1>CCOC(C)=O>[OH:13][C:14]1[CH:22]=[CH:21][CH:20]=[CH:19][C:15]=1[C:16]([NH:1][CH:2]([CH3:12])[CH2:3][NH:4][C:5](=[O:11])[O:6][C:7]([CH3:8])([CH3:10])[CH3:9])=[O:17]

Komponenten

6

Edukt 4

HCID 338Salicylic AcidHCID 795ImidazoleHCID 10868DicyclohexylcarbodiimideHCID 22499135tert-Butyl (2-aminopropyl)carbamate

Produkt 1

HCID 67493246Tert-butyl 2-(2-hydroxybenzamido)propylcarbamateAusbeute 40 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel2×

Versuchsvorschrift

To a solution of tert-butyl 2-aminopropylcarbamate (3.6 g, 20.6 mmol), 2-hydroxybenzoic acid (2.79 g, 20.6 mmol) and imidazole (1.41 g, 20.6 mmol) in EtOAc (100 mL) at 0° C. was slowly added a solution of DCC (4.26 g, 20.6 mmol) in EtOAc (50 mL). The reaction mixture was stirred (RT, 16 h), filtered and concentrated under reduced pressure. The crude product was purified by silica gel chromatography, EtOAc/PE (0-20%) to afford tert-butyl 2-(2-hydroxybenzamido)propylcarbamate (2.4 g, 40%) as a white solid.

Aufarbeitung

  1. filtrationfiltered
  2. concentrationconcentrated under reduced pressure
  3. customThe crude product was purified by silica gel chromatography, EtOAc/PE (0-20%)

Quellen und Nachweise

ORD-Eintrag
ord-66ca711de7664ab398a970c03b17aeb2
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08846972B2

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