Patent · US Expired

Process for the purification of (RR,SS)-2-(dimethylamino) methyl-1-(3-methoxyphenyl)-cyclohexanol from (RS,SR)-2-(dimethylamino)methyl-1-(3-methoxyphenyl) cyclohexanol

US6169205A · kind A · utility

1Cited by

2References

6Claims

0Family size

Assignee

Dipharma S.p.A. · IT

Inventors

Walter Cabri · Sant Celoni, ES
Domenico Magrone · Milano, IT

Key dates

Filing date	Mar 4, 1999
Grant date	Jan 2, 2001
Priority date	—
Expiry date	Mar 4, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the purification of (RR,SS)-2-(dimethylamino)methyl-1-(3-methoxyphenyl)cyclohexanol, which comprises the selective precipitation of (RR,SS)-2-(dimethylamino)methyl-1-(3-methoxyphenyl)cyclohexanol in the presence of (RS,SR)-2-(dimethylamino)methyl-1-(3-methoxyphenyl)cyclohexanol from a solvent consisting of water and a water-miscible organic solvent.

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