Water → (1R,2S)-(+)-cis-1-Amino-2-indanol

Temperatur

-20 °C

Indene oxide (117 g) diluted to a total volume of 600 mL in methylene chloride was diluted with acetonitrile (600 mL) and cooled to -20° C. Methanesulfonic acid (114 mL) was then added. The mixture was warmed to 25° C. and aged for 2 h. Water (600 mL) was added and the mixture heated at 45° C. for 5 h. The organic phase was separated and the aqueous phase further heated at reflux for 4 h with concentration to approximately 200 g/L. The solution was adjusted to pH 12.5 with 50% aqueous sodium hydroxide, and then cooled to 5° C. and filtered, dried in vacuo, to provide cis 1-amino-2-indanol.

1. temperatureThe mixture was warmed to 25° C. and aged for 2 h
2. temperaturethe mixture heated at 45° C. for 5 h
3. customThe organic phase was separated
4. temperaturethe aqueous phase further heated
5. temperatureat reflux for 4 h with concentration to approximately 200 g/L
6. temperaturecooled to 5° C.
7. filtrationfiltered
8. customdried in vacuo

ORD-Eintrag

ord-5cabef20e3d4416cbf3328a8863028c7

Quelldatensatz

uspto-grants-1998_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05723615