Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2006-12-19
2006-12-19
Lorengo, J. A. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S103000, C502S104000, C502S150000, C568S735000, C556S032000, C556S042000
Reexamination Certificate
active
07151070
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: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.
REFERENCES:
patent: 5952532 (1999-09-01), Durante et al.
patent: 5981424 (1999-11-01), Durante et al.
patent: 6166261 (2000-12-01), Takahashi
patent: 6180788 (2001-01-01), Stibrany
patent: 6214761 (2001-04-01), Bennett
patent: 6232510 (2001-05-01), Barnhart
patent: 6265622 (2001-07-01), Barnhart
patent: 6410805 (2002-06-01), Barnhart
patent: 6417305 (2002-07-01), Bennett
patent: 6432862 (2002-08-01), Bennett
patent: 6646167 (2003-11-01), Tsuruya
patent: 6677496 (2004-01-01), Netzer
patent: 6747105 (2004-06-01), Chen et al.
patent: 6875718 (2005-04-01), Fujita et al.
patent: WO 94/03271 (1994-02-01), None
Liu, et al. “Schiff base complexes of vanadium (III, IV, V) as catalysts for the electroreduction of O2 to H2O in Acetonitrile”, Inorg. Chem. 2001, 40, 1329-1333.
www.sci.u-szeged.hu/kkk/vanadium4/Pessoa1.pdf.
Gong Liuzhu
Jiang Yaozhong
Liu Quanzhong
Luo Zhibin
Mi Aiqiao
Brown Jennine
Chengdu Institute of Organic Chemistry Chinese Academy of Scienc
Greer Burns & Crain Ltd
Lorengo J. A.
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