Formic Acid → Methyl 4-[3-carboxy-4-(4-cyanophenyl)butyl]benzoate

HRID 1927406Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1927406
C(N(CC)CC)C.C(O)=O.[C:11]([C:13]1[CH:44]=[CH:43][C:16]([CH2:17][C:18]([CH2:31][CH2:32][C:33]2[CH:38]=[CH:37][C:36]([C:39]([O:41][CH3:42])=[O:40])=[CH:35][CH:34]=2)(C(OCC=C)=O)[C:19]([O:21]CC=C)=[O:20])=[CH:15][CH:14]=1)#[N:12].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCOCC1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[C:19]([CH:18]([CH2:17][C:16]1[CH:15]=[CH:14][C:13]([C:11]#[N:12])=[CH:44][CH:43]=1)[CH2:31][CH2:32][C:33]1[CH:38]=[CH:37][C:36]([C:39]([O:41][CH3:42])=[O:40])=[CH:35][CH:34]=1)([OH:21])=[O:20]

Komponenten

7

Edukt 4

HCID 284Formic AcidHCID 8471TriethylamineHCID 11776TriphenylphosphineHCID 57831378Diallyl 2-(4-cyanobenzyl)-2-[2-(4-methoxycarbonylphenyl)ethyl]malonate

Produkt 1

HCID 57831382Methyl 4-[3-carboxy-4-(4-cyanophenyl)butyl]benzoate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 167845palladium(II) acetateKatalysatorHCID 312751,4-DioxaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A solution of 7.5 ml (53.6 mmol) of triethylamine and 1.5 ml (40.6 mmol) of formic acid in 170 ml of dioxane is added to a solution of 7.5 g (16.25 mmol) of diallyl 2-(4-cyanobenzyl)-2-[2-(4-methoxycarbonylphenyl)ethyl]malonate, 0.3 g (1.14 mmol) of triphenylphosphine and 70 mg of palladium acetate in 170 ml of dioxane at room temperature. The reaction mixture is then stirred at 100° C. for 2 hours. After conversion is complete, the reaction solution is cooled and the solvent is removed in vacuo. The residue is taken up in ethyl acetate and water and acidified with 1 N hydrochloric acid, and the organic phase is separated off. The aqueous phase is extracted three times more with ethyl acetate, and the organic phases are then combined, washed with saturated sodium chloride solution and dried over sodium sulfate. After filtration, the solution is concentrated in vacuo. 5.48 g (89% of theory, 90% purity) of a colorless solid are obtained.

Aufarbeitung

  1. temperaturethe reaction solution is cooled
  2. customthe solvent is removed in vacuo
  3. customthe organic phase is separated off
  4. extractionThe aqueous phase is extracted three times more with ethyl acetate
  5. washwashed with saturated sodium chloride solution
  6. dry with materialdried over sodium sulfate
  7. filtrationAfter filtration
  8. concentrationthe solution is concentrated in vacuo
  9. custom5.48 g (89% of theory, 90% purity) of a colorless solid are obtained

Quellen und Nachweise

ORD-Eintrag
ord-d004cf4128c945429290620f9073cd34
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08183271B2

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