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1. Direct one step preparation and 13C-NMR spectroscopic characterization of a-ferrocenyl carbocations derived from ferrocene and carbonyl compounds in trifluoroacetic acid medium1a

Author

Prakash G.K. Surya, Buchholz Herwig A., Vaughan Julian F.S., Wang Qi, and Olah George. A.

Subjects
ferrocene, alpha-ferrocenyl carbocations, 13C-NMR of alpha-ferrocenylalkyl carbocations, Chemistry, QD1-999
Abstract

Reaction of aldehydes and ketones with ferrocene, in the presence of trifluoroacetic acid, afforded a series of stable long lived alpha-ferrocenylalkyl carbocations which were characterized by 13C-NMR spectroscopy. When this reaction was attempted using tetraphenylcyclopentadienone, quite unexpectedly the corresponding dihydro derivative 3 was isolated, in very good yield. Formation of this compound may require ferrocene acting as a reducing agent.

Published
1999

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