Citation: Chang Sheng JIANG, You Gui LI, Chen JIANG, Fang WANG, Tian Pa YOU. Asymmetric Cyclopropanation Catalyzed by Four Stereoisomers of a Copper-(Schiff-base) Complex with Double Chiral Centers[J]. Chinese Chemical Letters, ;2002, 13(12): 1143-1146. shu

Asymmetric Cyclopropanation Catalyzed by Four Stereoisomers of a Copper-(Schiff-base) Complex with Double Chiral Centers

Department of Chemistry, Universtity of Science & Technology of China, Hefei 230026

Received Date: 7 March 2002

Fund Project: This work was supported by the National Natural Science Foundation of China (No.29872035).

Four stereoisomers of a copper-(Schiff-base) complex with double chiral centers were applied to catalyze the asymmetric cyclopropanation. Two of the stereoisomers were also efficient catalysts affording high enantiomeric excess of up to 91.8%. A mechanism that predicts the observed results accurately was proposed.
- Asymmetric cyclopropanation,
- copper-(Schiff-base),
- olefins,
- diazoacetates
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