Water → (R)-(1-methylpiperidin-3-yl)methanol

Temperatur

20 °C

A solution of (R)-ethyl 1-methylpiperidine-3-carboxylate (5.69 g, 33 mmol) in ether (20 ml) was added dropwise to a stirred solution of lithium aluminium hydride (36.6 ml of a 1M solution in THF, 36.6 mmol) in ether (85 ml) cooled to maintain a reaction temperature of 20° C. The mixture was stirred for 1.5 hours at ambient temperature and then water (1.4 ml), 15% aqueous sodium hydroxide solution (1.4 ml) and then water (4.3 ml) were added. The insolubles were removed by filtration and the volatiles removed from the filtrate by evaporation to give (R)-(1-methylpiperidin-3-yl)methanol (4.02 g, 94%) as a colorless oil.

1. temperaturecooled
2. customThe insolubles were removed by filtration
3. customthe volatiles removed from the filtrate by evaporation

ORD-Eintrag

ord-9826ab7524ff42069f3a17275785d56a

Quelldatensatz

uspto-grants-2004_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06673803B2