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Synlett 1999; 1999(6): 783-785
DOI: 10.1055/s-1999-2732
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Dynamic Control of Ligand Conformation: Asymmetric Epoxidation Using Achiral (Salen)manganese(III) Complex

Keishi Miura* , Tsutomu Katsuki
  • *Department of Molecular Chemistry, Graduate School of Science, Kyushu University 33, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Fax +81 (92) 6 42 26 07
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Publication Date:
31 December 1999 (online)

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High enantioselectivity and good chemical yields were realized in the epoxidation of 2,2-dimethylchromene derivatives using achiral (salen)manganese(III) complex 5 as a catalyst in the presence of axially chiral bipyridine N,N′-dioxide 4.

asymmetric epoxidation - (salen)manganese(III) complex - dynamic stereocontrol