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2005
Alcohols
Q 0230
35- 085
An Economical, Highly Efficient and Recyclable Catalyst System for Asymmetric
Dihydroxylation of Olefins. — A new reusable cinchona alkaloid derivative ligand is
prepared and applied to homogeneous asymmetric dihydroxylation of olefins with
NMO in acetone/H2O system. Very good yields (80—93%) and e.e.'s (51—99%) are
achieved. Repetitive use of the ligand is possible without any loss of e.e. when NMO
and a small amount of OsO4 are added after each run. — (JIN, Y.; SUN*, X.-L.;
JIANG, R.; ZHANG, S.-Y.; Chin. J. Chem. 23 (2005) 3, 326-329; Dep. Chem., Fourth
Mil. Med. Univ., Xian 710032, Peop. Rep. China; Eng.) — Bartels
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