The reaction of [Cp(CO)(Ph3P)FeCCH2]+ BF-4 with several hydrazine derivatives yielded the acetonitrile complex [Cp(CO)(Ph3P)Fe-NCCH3]+ BF-4 (4) (62-71%). The formation of this product is apparently the result of a facile Beckmann-type rearrangement.
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Acknowtedgements. We thank the National Science Foundation (CHE-8500890) for the generous support of this program, the Midwest Center for Mass Spectrometry, an NSF Regional Instrument Facility (CHE-8211164) for obtaining mass spectral data and the National Institutes of Health (RR-02314) for the purchase of a 400 MHz NMR Spectrometer used in these studies.