Trifluoroacetic acid → 3-(1-adamantyl)4-methoxy-N-(trifluoroacetyl)aniline

HRID 2294569

Reaktionsgleichung

Reaktionsgleichung von HRID 2294569
C([N:3](CC)CC)C.ClC(OCC)=O.[C:14]12([C:24]3[CH:25]=[C:26]([CH:30]=[CH:31][C:32]=3[O:33][CH3:34])C(O)=O)[CH2:23][CH:18]3[CH2:19][CH:20]([CH2:22][CH:16]([CH2:17]3)[CH2:15]1)[CH2:21]2.[N-]=[N+]=[N-].[Na+].[F:39][C:40]([F:45])([F:44])[C:41](O)=[O:42].C(=O)(O)[O-].[Na+]>O1CCCC1.O>[C:14]12([C:24]3[CH:25]=[C:26]([CH:30]=[CH:31][C:32]=3[O:33][CH3:34])[NH:3][C:41](=[O:42])[C:40]([F:45])([F:44])[F:39])[CH2:21][CH:20]3[CH2:22][CH:16]([CH2:17][CH:18]([CH2:19]3)[CH2:23]1)[CH2:15]2

Komponenten

9

Edukt 6

HCID 6422Trifluoroacetic acidHCID 8471TriethylamineHCID 10928Ethyl chloroformateHCID 33557Sodium AzideHCID 516892Sodium BicarbonateHCID 52965033-(1-Adamantyl)-4-methoxybenzoic acid

Produkt 1

HCID 190682803-(1-adamantyl)4-methoxy-N-(trifluoroacetyl)anilineAusbeute 57 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel3×

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

11.70 ml (84 mmol) of triethylamine in 10 ml of tetrahydrofuran and 8.70 ml (91 mmol) of ethyl chloroformate in 10 ml of tetrahydrofuran are successively added dropwise to a solution of 20.6 g (70 mmol) of 3-(1-adamantyl)-4-methoxybenzoic acid in 200 ml of tetrahydrofuran at 0° C. The reaction medium is stirred for 40 minutes at 0° C., 6.83 g (105 mmol) of sodium azide, dissolved in 30 ml of water, are then added to this medium and the mixture is left stirring at 0° C. for 2 hours. The reaction medium is poured into ice-cold water, the mixture is extracted with dichloromethane and the organic phase is washed with water, dried over magnesium sulphate and evaporated. The residue is dissolved in 400 ml of dichloromethane, 7.3 ml (0.094 mol) of trifluoroacetic acid are added and the mixture is heated to reflux for 30 hours. The reaction medium is poured into saturated sodium bicarbonate solution and the organic phase is dried over magnesium sulphate and evaporated. The residue is chromatographed on silica with a dichloromethane/hexane (30:70) mixture to yield 14.1 g (57%) of 3-(1-adamantyl)-4-methoxy-N-(trifluoroacetyl)aniline, melting point 166°-167° C.

Aufarbeitung

  1. additionare then added to this medium
  2. waitthe mixture is left
  3. stirringstirring at 0° C. for 2 hours
  4. additionThe reaction medium is poured into ice-cold water
  5. extractionthe mixture is extracted with dichloromethane
  6. washthe organic phase is washed with water
  7. dry with materialdried over magnesium sulphate
  8. customevaporated
  9. dissolutionThe residue is dissolved in 400 ml of dichloromethane
  10. temperaturethe mixture is heated
  11. temperatureto reflux for 30 hours
  12. dry with materialthe organic phase is dried over magnesium sulphate
  13. customevaporated
  14. customThe residue is chromatographed on silica with a dichloromethane/hexane (30:70) mixture

Quellen und Nachweise

ORD-Eintrag
ord-c5b605f556b644a091ee900438bed316
Quelldatensatz
uspto-grants-1997_11
Patentnummer
US05688817

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