The stable metallocene-butyl complexes [(CpMe)2M(nBu)]2 (M = Y, Dy) were synthesized and their reactivity towards to ferrocene and bulky N-heterocyclic carbenes investigated. Selective mono-deprotonation of ferrocene and a benzylic methyl group of IMes were observed, whereas a control reaction of (CpMe)3M with IMes resulted in a normal-to-abnormal NHC rearrangement.
R. Grindell, B. M. Day, F. Guo, T. Pugh and R. A. Layfield, Chem. Commun., 2017, 53, 9990 DOI: 10.1039/C7CC05597H
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