Asymmetric cyclopropanation catalyzed by copper–Schiff’s base complexes

The asymmetric cyclopropanation of styrene with alkyl diazoacetate were performed with copper complexes of Schiff bases, derived from substituted salicylaldehydes and a new chiral amino alcohol, as the catalysts. The electronic and steric properties, as well as the position of those substituents sho...

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Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2001-01, Vol.165 (1), p.67-71
Main Authors: Li, Zhengning, Zheng, Zhuo, Wan, Boshun, Chen, Huilin
Format: Article
Language:English
Subjects:
Asymmetric catalysis
Catalysis
Catalytic reactions
Chemistry
Cyclopropanation
Diazoacetate
Exact sciences and technology
General and physical chemistry
Schiff base Cu(II) complex
Styrene
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:The asymmetric cyclopropanation of styrene with alkyl diazoacetate were performed with copper complexes of Schiff bases, derived from substituted salicylaldehydes and a new chiral amino alcohol, as the catalysts. The electronic and steric properties, as well as the position of those substituents show obvious effects on the enantioselectivities, and ee higher than 98% were achieved under optimal conditions.
ISSN:1381-1169
1873-314X
DOI:10.1016/S1381-1169(00)00432-5