Back to results
US 6,211,377 B1Granted
Process for the purification of (±)-2-azabicyclo[2.2.1]hept-5-en-3-one
AssigneeDegussa-Huls AG
InventorsJohny de Schrijver, Philippe Otten
Life of this patent
Estimating the term…
Abstract
A process for the purification of (±)-2-azabicyclo[2.2.1]hept-5-en-3-one wherein the purification is obtained exclusively by means of extraction procedures.
Claims7
A process for the purification of an aqueous reaction solution of (±)-2-azabicyclo{2.2.1}hept-5-en-3-one obtained from an aqueous preparative process, comprising:
- extracting the aqueous reaction solution with an organic solvent;
- separating a resulting organic phase containing the (±)-2-azabicyclo{2.2.1}hept-5-en-3-one from a resulting aqueous phase;
- mixing the resulting organic phase with water;
- and
- separating the resulting phases.
2 more elements
Dependencies are inferred from the claim text.