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.
