Journal
TETRAHEDRON LETTERS
Volume 45, Issue 49, Pages 8987-8990Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2004.10.047
Keywords
iron-pybox; aziridines; asymmetric catalysis; Lewis acid
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The synthesis of a series of iron-pybox complexes and their employment in the catalytic asymmetric aziridine forming reaction is presented. When AgSbF6 is used as an initiator, the i-pr- and t-bU-pybox complexes produce 47% of the cis-aziridine in moderate ee's with the bulk of side products consisting of the trans-isomer and beta-amino-alpha,beta-unsaturated esters (AUE's). (C) 2004 Elsevier Ltd. All rights reserved.
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