Journal
TETRAHEDRON
Volume 61, Issue 38, Pages 9018-9024Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2005.07.039
Keywords
iridium; enynes; cycloisomerization; enantioselective; cyclopropanes
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A cationic iridium complex catalyzes a cycloisomerization of nitrogen-bridged 1,6-enynes to give 3-azabicyclo[4.1.0]heptenes in good to high yield. When an iridium-chiral diphosphine complex is used, the reaction proceeds enantiomerically to give chiral cyclopropanes fused by a six-membered ring system. (c) 2005 Elsevier Ltd. All rights reserved.
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