Diiodomethane → 1-[2-(Cyclopropylmethoxy)ethyl]-4-(phenylmethoxy)benzene
Reaktionsgleichung
[CH2:1]([O:4][CH2:5][CH2:6][C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:9][CH:8]=1)[CH:2]=[CH2:3].I[CH2:22]I.[Cl-].[NH4+]>CCCCCC.C([Zn]CC)C>[CH2:14]([O:13][C:10]1[CH:11]=[CH:12][C:7]([CH2:6][CH2:5][O:4][CH2:1][CH:2]2[CH2:22][CH2:3]2)=[CH:8][CH:9]=1)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1Komponenten
Reaktionsbedingungen
- Temperatur
- 0 °C
Versuchsvorschrift
To a stirred solution of compound of formula (7), (12 g, 0.0447 mol) in dry hexane (50 ml), diethyl zinc (1.1 M solution in hexane, 185 ml) was added at 0° C. under nitrogen atmosphere followed by diiodomethane (18 ml, 0.224 mol). The reaction was stirred for 6 h at 0° C. and poured over cold aqueous solution of ammonium chloride. The organic layer was separated and the aqueous layer extracted repeatedly with diethyl ether. The combined organic layer was washed with aq. solution of sodium thiosulphate, dried over anhydrous sodium sulphate, filtered and concentrated. The crude product was purified over silica gel column using ethyl acetate and light petroleum ether (1:50) as an eluent to afford compound of formula (8), as a colorless liquid 11.365 g (90%).
Aufarbeitung
- customThe organic layer was separated
- extractionthe aqueous layer extracted repeatedly with diethyl ether
- washThe combined organic layer was washed with aq. solution of sodium thiosulphate
- dry with materialdried over anhydrous sodium sulphate
- filtrationfiltered
- concentrationconcentrated
- customThe crude product was purified over silica gel column
Quellen und Nachweise
- ORD-Eintrag
- ord-5954218747e140378d0ce94f946ceb2b
- Quelldatensatz
- uspto-grants-2006_03
- Patentnummer
- US07019172B2
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