Asymmetric epoxidation of unfunctionalized olefins catalyzed by Mn(III) salen complex immobilized on MCM-48

作者：Yu, Kai; Lou, Lan-Lan; Lai, Chao; Wang, Shengjie; Ding, Fei; Liu, Shuangxi^*

来源：Catalysis Communications, 2006, 7(12): 1057-1060.

DOI：10.1016/j.catcom.2006.05.017

• Mn(III) salen
• MCM-48
• unfunctionalized olefins
• asymmetric epoxidation

Chiral Mn(III) salen complexes were supported on mesoporous molecular sieve MCM-48 and employed as catalyst in the asymmetric epoxidation of some unfunctionalized olefins. The as-synthesized catalysts showed excellent enantioselectivity than homogeneous catalysts for alpha-methylstyrene and the highest ee value (up to > 99%) was obtained. Furthermore, these catalysts were also effective for bulkier olefins such as indene and 1-phenylcyclohexene. Compared to homogeneous counterparts, the heterogeneous catalysts are more stable and can be recycled three times without loss of enantioselectivity.

• 出版日期2006-12
• 单位南开大学