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The Mechanism of the
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2001
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A complex interplay between the catalyst concentration and the reaction rate exists, as shown by kinetic studies, for the [Cp<sub>2</sub> TiMe<sub>2</sub> ]-catalyzed intermolecular hydroamination of alkynes. The reason for this is a reversible dimerization of the catalytically active species [Eq. (1)]. L<sup>1</sup> , L<sup>2</sup> =Cp (cyclopentadienyl), Tol-NH (Tol=4-MeC<sub>6</sub> H<sub>4</sub> , tolyl).