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Synlett 1996; 1996(11): 1079-1081
DOI: 10.1055/s-1996-5695
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Enantioselective Epoxidation of 2,2-Dimethylchromenes Using Achiral Mn-Salen Complex as a Catalyst in the Presence of Chiral Amine

Takashi Hashihayata, Yoshio Ito, Tsutomu Katsuki*
  • *Department of Chemistry, Faculty of Science, Kyushu University 33, Hakozaki, Higashi-ku, Fukuoka 812-81, Japan
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Publication Date:
31 December 2000 (online)

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Epoxidation of 2,2-dimethylchromene derivatives using achiral (salen)manganese(III) complexes as catalysts in the presence of (-)-sparteine was found to proceed enantioselectively (up to 73% ee).

asymmetric epoxidation - Mn-salen-amine adduct - chiral axial ligand

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