Patent · US Expired

Chiral bisphosphines

US5874629A · kind A · utility

5Cited by

2References

6Claims

0Family size

Assignee

MERCK & CO., INC. · US

Inventors

Philip Pye · Guttenberg, US
Kai Rossen · Hanau, DE
Ralph P. Volante · Rahway, US

Key dates

Filing date	Jun 9, 1997
Grant date	Feb 23, 1999
Priority date	—
Expiry date	Jun 9, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/65539
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

New chiral biphosphines, e.g., ##STR1## are useful as key components in catalysts for asymmetric reactions, providing desirably high enantiomeric excess (ee).

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