Abstract
Ferrocenoyl cyclopropane derivatives were prepared via the reaction of an electron-deficient olefin and a first prepared ferrocenoyl nitrogen ylide. The new compounds 2a -11a have been given in good yields and high stereoselectivity (the ratios of trans to cis diastereoisomers were above 99:1) under the optimum condition and characterized by 1 H NMR, 13 C NMR, FAB-MS and IR. The X-ray crystal structure of 8a has also been determined.
Key words
cyclopropanation - ferrocenoyl nitrogen ylide - stereoselective synthesis - electron-deficient - structure
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18 Crystallographic data for the structural analysis has been deposited with the Cambridge Crystallographic Data Centre, CCDC No. 228258 for compound 8a . Copies of this information may be obtained free of charge from: The Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK, Fax: +44(1223)336033; email: deposit@ccdc.cam.ac.uk or www: http://www.ccdc.cam.ac.uk.
