The synthesis and characterization of a series of Me 2 Si[(η 5 -C 5 Me 4 )( t BuN)]LnE(TMS) 2 complexes is described for Ln = Sm, Nd, Yb, Lu; E = CH, N. As precatalysts for aminoalkene hydroamination/cyclization, they are significantly more active than the corresponding (C 5 Me 5 ) 2 LnE(TMS) 2 complexes.
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Tian et al. (1999) studied this question.
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