Hydrochloric Acid → HCID 12920232, Verbindung

Temperatur

70 °C

4.49 g of 2,2-dimethyl-6-(tetrahydro-2H-pyran-2-yloxy)-4-hexyn-3-one was dissolved in 20 ml of methanol, and 1.30 g of sodium methoxide and 1.53 g of hydroxylamine hydrochloride were added. The mixture was stirred at 70° C. for 2 hours. The reaction mixture was cooled to room temperature and then adjusted to pH 2 with concentrated hydrochloric acid. The mixture was stirred at room temperature for 18 hours. After aqueous saturated sodium hydrogen carbonate was added, the reaction mixture was extracted with ethyl acetate. The extract was washed with aqueous saturated sodium chloride, dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to obtain 1.12 g of (3-t-butyl-isoxazol-5-yl)methanol.

1. temperatureThe reaction mixture was cooled to room temperature
2. stirringThe mixture was stirred at room temperature for 18 hours
3. extractionthe reaction mixture was extracted with ethyl acetate
4. washThe extract was washed with aqueous saturated sodium chloride
5. dry with materialdried over anhydrous sodium sulfate
6. concentrationconcentrated under reduced pressure

ORD-Eintrag

ord-c93a3c5a5b41463ea504659dc142aa7c

Quelldatensatz

uspto-grants-2010_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07846956B2