Patent · US Expired

Enantiomers of 1-(4-chlorophenyl)phenylmethyl!-(4-methylphenyl)sulfonyl!p i

US5703082A · kind A · utility

1Cited by

7References

1Claims

0Family size

Assignee

UCB S.A. · BE

Inventors

Eric Cossement · Brussels, BE
Guy Bodson · Virton, BE
Jean Gobert · Maisons-Alfort, FR

Key dates

Filing date	Jun 5, 1995
Grant date	Dec 30, 1997
Priority date	—
Expiry date	Jun 5, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D295/26
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Levorotatory and dextrorotatory enantiomers of 1-(4-chlorophenyl)phenylmethyl!-4-(4-methylphenyl)sulfonyl!piperazine of the formula ##STR1## their preparation and use for the preparation of substantially optically pure enantiomers of 1-(4-chlorophenyl)phenylmethyl!piperazine, which are themselves valuable intermediate products for the preparation of optically active therapeutic compounds having a very high degree of optical purity.

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