Hydrochloric Acid → 1,4-Dioxaspiro[4.5]dec-8-yl(2-methyl-5-phenylfuran-3-yl)methanol

HRID 1877076

Reaktionsgleichung

[CH3:1][C:2]1[O:3][C:4]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[CH:5][C:6]=1[CH:7]=[O:8].Br[Mg][CH:17]1[CH2:26][CH2:25][C:20]2([O:24][CH2:23][CH2:22][O:21]2)[CH2:19][CH2:18]1.O1CCCC1.Cl.O>O1CCCC1>[O:21]1[C:20]2([CH2:25][CH2:26][CH:17]([CH:7]([C:6]3[CH:5]=[C:4]([C:9]4[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=4)[O:3][C:2]=3[CH3:1])[OH:8])[CH2:18][CH2:19]2)[O:24][CH2:23][CH2:22]1

Komponenten

Reaktionsbedingungen

Temperatur: 0 °C

Versuchsvorschrift

To a solution of 2-methyl-5-phenylfuran-3-carbaldehyde (2.4 g) in tetrahydrofuran (30 mL) was added dropwise 0.4N bromo(1,4-dioxaspiro[4.5]dec-8-yl)magnesium-tetrahydrofuran solution (33.5 mL) at 0° C. and, after the completion of the dropwise addition, the mixture was stirred at 0° C. for 1 hr. The reaction mixture was treated with 1N hydrochloric acid, poured into water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column (0% ethyl acetate/hexane to 30% ethyl acetate/hexane) to give the title compound (3.9 g, 91%) as a yellow crystal.

Aufarbeitung

additionafter the completion of the dropwise addition
extractionthe mixture was extracted with ethyl acetate
washThe organic layer was washed with saturated brine
dry with materialdried over magnesium sulfate
customThe solvent was evaporated under reduced pressure
customthe residue was purified by silica gel column (0% ethyl acetate/hexane to 30% ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag: ord-ce0fe931b60c439dac559fca343f0011
Quelldatensatz: uspto-grants-2012_11
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08309580B2

Verknüpfte Notizen

Wird geladen…