Water → Cyclopentadecanol

5.0 g of cyclopentadecanone (MW 224, 22.3 mmol) were dissolved in 5.0 ml of ethanol, and hydrogenated sodium borate (MW 37.8, 2.5 g) was added thereto over 30 minutes. During this period, the temperature of the reaction mixture increased from 20° C. to 50° C. After reaction for one hour at 50° C., 50 ml of hexane and 50 ml of water were successively added, and the reaction was terminated. The reaction mixture was separated into an aqueous phase and an organic phase. The organic phase was washed twice with water and the solvent was removed under reduced pressure to yield a crude product. 4.57 g of crude product were purified on a silica gel column chromatograph (internal diameter 25 mm×height 190 mm, silica gel 60 manufactured by Nakalai Tesque Co. Ltd.) using hexane:ethyl acetate (9:1, v/v), to give 2.35 g of cyclopentadecanol having a purity of 99.3%.

1. waitDuring this period
2. temperaturethe temperature of the reaction mixture increased from 20° C. to 50° C
3. customAfter reaction for one hour at 50° C.
4. customthe reaction was terminated
5. customThe reaction mixture was separated into an aqueous phase
6. washThe organic phase was washed twice with water
7. customthe solvent was removed under reduced pressure
8. customto yield a crude product
9. custom4.57 g of crude product were purified on a silica gel column chromatograph (internal diameter 25 mm×height 190 mm, silica gel 60 manufactured by Nakalai Tesque Co. Ltd.)

ORD-Eintrag

ord-63a47636517a42099a5c4c752af81803

Quelldatensatz

uspto-grants-2004_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06759557B2