Triethylamine → HCID 21075935, Verbindung

HRID 1873629Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1873629
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[CH:9]=[C:8]([C@H:13]([CH3:17])[C:14]([OH:16])=[O:15])[CH:7]=[CH:6]2.[OH:18][CH2:19][CH2:20][O:21][C:22]1[CH:31]=[CH:30][C:25]([O:26][CH2:27][CH2:28]O)=[CH:24][CH:23]=1.Cl.CN(C)CCCN=C=NCC.CCN(CC)CC>CN(C=O)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[CH:9]=[C:8]([C@H:13]([CH3:17])[C:14]([O:16][CH2:28][CH2:27][O:26][C:25]1[CH:30]=[CH:31][C:22]([O:21][CH2:20][CH2:19][OH:18])=[CH:23][CH:24]=1)=[O:15])[CH:7]=[CH:6]2

Komponenten

6

Edukt 4

HCID 8471TriethylamineHCID 669122,2'-(p-Phenylenedioxy)diethanolHCID 156391NaproxenHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

Produkt 1

HCID 21075935HCID 21075935, VerbindungAusbeute 79,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A solution of (2S)-2-(6-methoxy(2-naphthyl))propanoic acid (naproxen, 4.27 g, 18.5 mmol), hydroquinone bis(2-hydroxyethyl)ether (10.6 g, 53.3 mmol), N,N-dimethylaminopyridine (DMAP, 2.71 g, 22.2 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (9.34 g, 48.7 mmol) and NEt3 (13 mL, 93.3 mmol) in DMF (100 mL) was stirred at ambient temperature overnight. The reaction mixture was evaporated to dryness under vacuum and the residue was partitioned between HCl (3N, 100 mL) and CH2Cl2 (200 mL). The organic layer was washed with water, brine, dried over Na2SO4, filtered and concentrated. The product was separated by silica gel column chromatography eluting with EtOAc/hexane (1:1, Rf=0.15) and then recrystallized from ethyl ether and hexane to give the title compound as a white solid (6.01 g, 31% yield). Mp 76-78° C. 1H NMR (CDCl3) δ 7.7-7.64 (m, 3H), 7.42-7.38 (m, 1H), 7.15-7.08 (m, 2H), 6.74-6.72 (m, 4H), 4.45-4.36 (m, 2H), 4.1-3.85 (m, 7H), 3.90 (s, 3H), 2.13 (br. t, 1H), 1.58 (d, J=7.2 Hz, 3H). 13C NMR (CDCl3) δ 174.6, 157.5, 153.0, 152.8, 135.4, 133.6, 129.2, 128.8, 127.1, 126.1, 125.9, 118.8, 115.7, 115.3, 105.5, 69.7, 66.6, 63.1, 61.4, 55.2, 45.2, 18.4. MS (API) m/z 428 (M+NH4)+. Anal. calcd. for C24H26O6: C, 70.23; H, 6.38. Found: C, 70.01; H, 6.39.

Aufarbeitung

  1. customThe reaction mixture was evaporated to dryness under vacuum
  2. customthe residue was partitioned between HCl (3N, 100 mL) and CH2Cl2 (200 mL)
  3. washThe organic layer was washed with water, brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe product was separated by silica gel column chromatography
  8. washeluting with EtOAc/hexane (1:1, Rf=0.15)
  9. customrecrystallized from ethyl ether and hexane

Quellen und Nachweise

ORD-Eintrag
ord-fd6821be772f44b98db7ae8480be4830
Quelldatensatz
uspto-grants-2012_11
Patentnummer
US08304409B2

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