Water → HCID 88223354, compound

Temperature

20 °C

3.62 g (19.2 mmol) of (2S,3R)-1,2-epoxy-3-(2-methoxy-2-methylethoxy)hexane in 30 ml of diethyl ether were added dropwise at 0° C. under argon over the course of 15 minutes to a stirred suspension of 0.85 g (22.2 mmol) of lithium aluminum hydride in 100 ml of diethyl ether. The mixture was subsequently then stirred at 20° C. for 36 hours. The excess of lithium aluminum hydride was decomposed by cautious addition of 1.2 ml of water. After 5 minutes, 4 ml of a 10% strength by weight sodium hydroxide solution were added and the mixture was vigorously stirred for 10 minutes. The precipitate was then filtered off, and the filter residue was extracted three times with 50 ml of tetrahydrofuran. The combined organic phases were dried over anhydrous sodium sulfate and concentrated. The residue was distilled over potassium carbonate and yielded (25,3R)-3-(2-methoxy-2-methylethoxy)hexan-2-ol in a yield of 83% (b.p.: 71-73° C./3 hPa; [α]D19=−10.3° (c=2.3 in dichloromethane)).

1. waitAfter 5 minutes
2. stirringthe mixture was vigorously stirred for 10 minutes
3. filtrationThe precipitate was then filtered off
4. extractionthe filter residue was extracted three times with 50 ml of tetrahydrofuran
5. dry with materialThe combined organic phases were dried over anhydrous sodium sulfate
6. concentrationconcentrated
7. distillationThe residue was distilled over potassium carbonate

ORD record

ord-e8e93ea8a19948669503d9839ff87259

Source dataset

uspto-grants-2001_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06245328B1