Croatica Chemica Acta, Vol. 80 No. 1, 2007.
Original scientific paper
Catalytic Asymmetric Dihydroxylation of Olefins Using a Recoverable and Reusable Ligand
Qiao Feng Wang
Xiao Li Sun
Sheng Yong Zhang
Xiang Yang Qin
Yan Zhao
Abstract
A free bis-cinchona alkaloid derivative ligand was prepared by a simple synthetic manipulation.
With ligand/olefin mole ratio of 1%, the asymmetric dihydroxylation reactions of six olefins
proceeded smoothly to give the chiral vicinal diols in high chemical yields and optical yields.
The ligand itself could be recovered quantitatively by a simple operation and reused five times
without loss of enantioselectivity.
Keywords
asymmetric dihydroxylation; bis-cinchona alkaloid derivative; recoverable and reusable ligand
Hrčak ID:
12819
URI
Publication date:
11.3.2007.
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