Croatica Chemica Acta, Vol. 80 No. 1, 2007.
Izvorni znanstveni članak
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
Sažetak
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.
Ključne riječi
asymmetric dihydroxylation; bis-cinchona alkaloid derivative; recoverable and reusable ligand
Hrčak ID:
12819
URI
Datum izdavanja:
11.3.2007.
Posjeta: 2.005 *