Chiral catalyst, process for preparing the same and its use in the oxidate coupling of naphthols
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 19, 2006
Grant Date -
Nov 17, 2005
app pub date -
Feb 27, 2003
filing date -
Jun 18, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The compound of this invention is a useful catalyst for the oxidative coupling of naphthol. Its originality lies in that it is a novel vanadium complex of Schiff's base formed by a chiral amino acid and a formyl biphenol or its derivative. Its axis chirality is induced to form by the chiral amino acid. It has the general formula: ##STR00001## where R represents a benzyl, an isopropyl, an isobutyl or a tertiary butyl and the configuration of the amino acid is R or S. The compound can catalyze oxidative coupling of naphthol or its derivative to form binaphthol or its derivatives with a high optical purity.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully