Diethyl Ether → HCID 66842955, Verbindung

HRID 2252360Notizen

Reaktionsgleichung

C[O:2][C:3]1[CH:4]=[C:5]([CH:14]=[CH:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=2[F:22])[CH:6]=[C:7]([O:12]C)[C:8]=1[CH:9]([CH3:11])[CH3:10].Cl.N1C=CC=CC=1.CCOCC>C(OCC)(=O)C>[F:22][C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][C:16]=1[CH:15]=[CH:14][C:5]1[CH:6]=[C:7]([OH:12])[C:8]([CH:9]([CH3:10])[CH3:11])=[C:3]([OH:2])[CH:4]=1

Komponenten

Reaktionsbedingungen

Temperatur: 200 °C

Versuchsvorschrift

A mixture of 2-(3,5-dimethoxy-4-i-propylphenyl)-1-(2-fluorophenyl)ethene (27B) (0.308 g, 1.03 mmol) and pyridine hydrochloride (0.72 g, 6.2 mmol) was heated at 200° C. for 4 h under a stream of argon. The reaction mixture was cooled to room temperature. 2NHCl (10 mL) and ether (15 mL) was added. The organic layer was separated and the aqueous layer was extracted with ether (3×10 mL). The extract was dried over anhydrous Na2SO4. Evaporation of ether followed by flash chromatography using 15% ethyl acetate in hexane afforded pure 5-[2-(2-fluorophenyl)ethenyl]-2-i-propyl-1,3-benzenediol (37B) (0.269 g, 95% yield) as an off-white solid. 1HNMR (CDCl3, ppm): δ 1.41 (d, J=7.2 Hz, 6H), 3.51 (qint., J=7.2 Hz, 1H), 5.01 (b, 2H), 6.56 (s, 2H), 6.98 (d, J=17.6 Hz, 1H), 7.0-7.3 (m, 4H), 7.60 (ddd, J=7.5, 7.5, 2.2 Hz, 1H).

Aufarbeitung

temperatureThe reaction mixture was cooled to room temperature
customThe organic layer was separated
extractionthe aqueous layer was extracted with ether (3×10 mL)
dry with materialThe extract was dried over anhydrous Na2SO4
customEvaporation of ether

Quellen und Nachweise

ORD-Eintrag: ord-c61985155cb64329ab2eb5091e3049d0
Quelldatensatz: uspto-grants-2008_01
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07321050B2

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