4.0 Article

Synthesis of chiral bis(oxazolinyl)bipyridine ligands and related helical metal complexes

Journal

TETRAHEDRON-ASYMMETRY
Volume 13, Issue 2, Pages 161-165

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0957-4166(02)00069-1

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Enantiomerically pure tetradentate bis(oxazolinyl)bipyridine ligands 1 have been synthesized in high yields. X-Ray analysis showed that the copper(I) complexes of ligands 1 had a C-2-symmetric helical structure. Ruthenium complexes of ligands 1 prepared in situ were found to be efficient in the asymmetric cyclopropanation of styrene with ethyl diazoacetate. (C) 2002 Elsevier Science Ltd. All rights reserved.

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