Carbon Dioxide → Ammonia

HRID 500629Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 500629
C([Li])CCC.Br[C:7]1[CH:8]=[C:9]([CH:38]=[CH:39][CH:40]=1)[CH2:10][O:11][CH:12]1[CH2:17][CH2:16][N:15]([C:18]([CH3:37])([CH3:36])[CH2:19][CH2:20][C:21]([C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[C:22]#[N:23])[CH2:14][CH2:13]1.C(=O)=O>O1CCCC1>[NH3:15].[CH2:10]([O:11][CH:12]1[CH2:13][CH2:14][N:15]([C:18]([CH3:37])([CH3:36])[CH2:19][CH2:20][C:21]([C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)([C:30]2[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=2)[C:22]#[N:23])[CH2:16][CH2:17]1)[C:9]1[CH:8]=[CH:7][CH:40]=[CH:39][CH:38]=1

Komponenten

6

Edukt 3

HCID 280Carbon DioxideHCID 59423969HCID 59423969, VerbindungHCID 178418339Butyllithium

Produkt 2

HCID 222AmmoniaHCID 59423905HCID 59423905, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

n-Butyl lithium (2.5M in hexanes, 0.23 mL, 0.56 mmol) was added dropwise to a solution of the product of example 87 (200 mg, 0.38 mmol) in tetrahydrofuran (8 mL), cooled to −78° C., and the mixture was stirred for 30 minutes. Carbon dioxide was then passed through the solution, with stirring at −78° C., for 3.5 hours before the mixture was allowed to warm to room temperature. The reaction mixture was concentrated in vacuo and the residue was partitioned between ethyl acetate (30 mL) and water (20 mL). The organic layer was separated, washed with water, dried over magnesium sulfate and concentrated in vacuo. Purification of the residue by column chromatography on silica gel, eluting with dichloromethane:methanol:0.88 ammonia, 100:0:0 to 98:2:0.2, afforded the title compound as a by-product, as an off white solid in 68% yield, 116 mg.

Aufarbeitung

  1. stirringwith stirring at −78° C., for 3.5 hours before the mixture
  2. temperatureto warm to room temperature
  3. concentrationThe reaction mixture was concentrated in vacuo
  4. customthe residue was partitioned between ethyl acetate (30 mL) and water (20 mL)
  5. customThe organic layer was separated
  6. washwashed with water
  7. dry with materialdried over magnesium sulfate
  8. concentrationconcentrated in vacuo
  9. customPurification of the residue by column chromatography on silica gel
  10. washeluting with dichloromethane

Quellen und Nachweise

ORD-Eintrag
ord-62d8c2d0c5ad458ab00c62a1c6fa3deb
Quelldatensatz
uspto-grants-2010_08
Patentnummer
US07772223B2

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