New of chiral salen 2 - catalyst and method for the production of chiral compounds from racemic epoxides with the use of the novel catalyst

摘要

There are provided new chiral salen catalyst, and methods for the preparation of chiral compounds from racemic epoxides by using new catalyst. More particularly, there are provided new chiral compounds from racemic epoxides by using new catalyst. More particularly, there are provided new chiral salen catalyst which has new molecular structure, which can be recycled without any additional regeneration process because the catalyst retains its catalystic activity even after the repeated use, and which causes no or little racemization which results from the reverse reaction of the produced chiral compound, and methods for the mass production of chiral compounds, which is usefuld as an intermediate for the manufacture of drugs and food additives, from racemic epoxides by using the catalyst in an economic manner and with high optical purity.