Journal
TETRAHEDRON-ASYMMETRY
Volume 16, Issue 23, Pages 3829-3836Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2005.10.021
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A chiral ruthenium porphyrin complex, functionalized with four vinyl groups, has been polymerized with styrene, divinylbenzene (or ethylene glycol dimethacrylate) to obtain supported ruthenium complexes. The asymmetric addition of ethyl diazoacetate (or diazoacetonitrile) to styrene derivatives was carried out by using these polymers as catalysts. The reaction proceeded under mild conditions and gave trans-cyclopropanes with good enantiomeric excess (up to 90%). (c) 2005 Elsevier Ltd. All rights reserved.
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