A new dinuclear chiral salen complexes for asymmetric ring opening and closing reactions: Synthesis of valuable chiral intermediates

SS Thakur, SW Chen, W Li, CK Shin, SJ Kim…

文献索引：Thakur, Santosh Singh; Chen, Shu-Wei; Li, Wenji; Shin, Chang-Kyo; Kim, Seong-Jin; Koo, Yoon-Mo; Kim, Geon-Joong Journal of Organometallic Chemistry, 2006 , vol. 691, # 9 p. 1862 - 1872

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被引用次数: 34

摘要

A new dinuclear chiral Co (salen) complexes bearing group 13 metals have been synthesized and characterized. The easily prepared complexes exhibited very high catalytic reactivity and enantioselectivity for the asymmetric ring opening of epoxides with H2O, chloride ions and carboxylic acids and consequently provide enantiomerically enriched terminal epoxides (> 99% ee). It also catalyzes the asymmetric cyclization of ring opened ...