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Potassium Carbonate → 7-(2-chlorophenyl)-7-(6,7-dihydro-4H-furo[3,2-c]pyridin-5-yl)-2,2-dimethylheptanoic acid ethyl ester

HRID 1526461
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1526461
[O:1]1[C:9]2[CH2:8][CH2:7][NH:6][CH2:5][C:4]=2[CH:3]=[CH:2]1.[CH2:10]([O:12][C:13](=[O:30])[C:14]([CH3:29])([CH3:28])[CH2:15][CH2:16][CH2:17][CH2:18][CH:19](Br)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[Cl:26])[CH3:11].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[CH2:10]([O:12][C:13](=[O:30])[C:14]([CH3:29])([CH3:28])[CH2:15][CH2:16][CH2:17][CH2:18][CH:19]([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[Cl:26])[N:6]1[CH2:7][CH2:8][C:9]2[O:1][CH:2]=[CH:3][C:4]=2[CH2:5]1)[CH3:11]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 152899484,5,6,7-Tetrahydrofuro[3,2-C]pyridineHCID 675123617-Bromo-7-(2-chlorophenyl)-2,2-dimethylheptanoic acid ethyl ester

Produkt 1

HCID 569713827-(2-chlorophenyl)-7-(6,7-dihydro-4H-furo[3,2-c]pyridin-5-yl)-2,2-dimethylheptanoic acid ethyl esterAusbeute 48,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Reaktionsbedingungen

Temperatur
65 °C

Versuchsvorschrift

4,5,6,7-Tetrahydrofuro[3,2-c]pyridine (0.16 g, 1.3 mmol), 7-bromo-7-(2-chlorophenyl)-2,2-dimethylheptanoic acid ethyl ester (0.49 g, 1.3 mmol) in DMF (13 mL), and potassium carbonate (0.27 g, 1.95 mmol) were combined under an argon atmosphere at room temperature. The mixture was heated to 65° C. overnight under an argon atmosphere. The reaction continued at 65° C. for 48 hours. After cooling to room temperature and concentration under reduced pressure, the crude product (0.28 g) was purified by column chromatography (silica gel, ethyl acetate/heptane=1/20 to 1/5) to afford 7-(2-chlorophenyl)-7-(6,7-dihydro-4H-furo[3,2-c]pyridin-5-yl)-2,2-dimethylheptanoic acid ethyl ester (Compound Ij, 0.26 g, 48.1% yield) as a yellow oil. 1H NMR (Field: 300 MHz, Solvent: CDCl3/TMS) δ (ppm): 7.42 (d, 1H, J=7.5 Hz), 7.29 (d, 1H, J=7.2 Hz), 7.17 (t, 1H, J=8.7 Hz), 7.14 (s, 1H), 7.09 (t, 1H, J=8.1 Hz), 6.08 (s, 1H), 4.12 (t, 1H, J=4.2 Hz), 4.01 (q, 2H, J=7.2 Hz), 3.98 (d, 1H, J=14.4 Hz), 3.26 (d, 1H, J=13.5 Hz), 2.79-2.53 (m, 4H), 1.90-1.73 (m, 2H), 1.35-1.32 (m, 2H), 1.20-1.06 (m, 7H), 1.04 (s, 6H). 13C NMR (Field: 75 MHz, Solvent: CDCl3/TMS) δ (ppm): 177.91, 148.97, 140.89, 139.39, 134.93, 129.50, 129.00, 128.02, 126.84, 115.82, 108.84, 63.33, 60.54, 47.61, 47.51, 42.28, 40.78, 33.21, 26.23, 25.35, 24.65, 14.50.

Aufarbeitung

  1. customwere combined under an argon atmosphere at room temperature
  2. temperatureAfter cooling to room temperature
  3. concentrationconcentration under reduced pressure
  4. customthe crude product (0.28 g) was purified by column chromatography (silica gel, ethyl acetate/heptane=1/20 to 1/5)

Quellen und Nachweise

ORD-Eintrag
ord-7ceff3f2a1604440a269fbbf62da65c0
Quelldatensatz
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09085585B2

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