Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-04-26
2005-04-26
Bell, Mark L. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S102000, C502S104000, C502S123000
Reexamination Certificate
active
06884750
ABSTRACT:
The present invention relates to new chiral salen catalysts and methods for the preparation of chiral compounds from racemic epoxides by using new catalyst. More particularly, the present invention is to provide novel chiral salen catalysts and their uses for producing chiral compounds having high optical purity to be used as raw materials for preparing chiral medicines or food additives in a large scale economically, wherein the chirl salen catalyst having a particular molecules structure can be reused continuously without any activating process of used catalysts and cause no or little racemization after the reaction is completed because it maintains its catalytic activity after the reaction process.
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Kim Geon Joong
Kim Ho Cheol
Kim Seong Jin
Lee Ho Seong
Yun Jin Won
Bell Mark L.
Brown Jennine
Muserlian, Lucas & Mercanti, LLP
RS Tech Corp.
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