Patent · US Expired

Method for the production of chiral imidazolidin-2-ones

US7365210B2 · kind B2 · utility

0Cited by

0References

9Claims

0Family size

Assignee

BASF SE

Inventors

Hansgeorg Ernst · Speyer, DE
Jürgen Koppenhöfer · Meckenheim, DE
Daniela Klein · Mannheim, DE

Key dates

Filing date	Apr 8, 2003
Grant date	Apr 29, 2008
Priority date	—
Expiry date	Oct 31, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D233/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing chiral imidazolidin-2-ones of the formula Iin which in which R1, R2 and R3 have the abovementioned meaning, with urea in the presence of an involatile ammonium salt, wherein the reaction is carried out in the presence of an aprotic polar organic solvent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.