Comparison of Decamethyldizincocene
[(η<sup>5</sup>‑Cp*)<sub>2</sub>Zn<sub>2</sub>] versus
Decamethylzincocene
[Cp*<sub>2</sub>Zn] and Diethylzinc Et<sub>2</sub>Zn As Precatalysts
for the Intermolecular Hydroamination Reaction
Anja Lühl
Larissa Hartenstein
Siegfried Blechert
Peter W. Roesky
10.1021/om300649q.s001
https://acs.figshare.com/articles/journal_contribution/Comparison_of_Decamethyldizincocene_sup_5_sup_Cp_sub_2_sub_Zn_sub_2_sub_versus_Decamethylzincocene_Cp_sub_2_sub_Zn_and_Diethylzinc_Et_sub_2_sub_Zn_As_Precatalysts_for_the_Intermolecular_Hydroamination_Reaction/2476060
A comparison of the Zn–Zn bonded species [(η<sup>5</sup>-Cp*)<sub>2</sub>Zn<sub>2</sub>] versus the related organometallic
zinc compound [Cp*<sub>2</sub>Zn] and ZnEt<sub>2</sub> for the intermolecular
hydroamination reaction in the presence of equimolar amounts of [PhNMe<sub>2</sub>H][B(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>] is reported.
All compounds show high reaction rates under mild conditions and a
good functional group tolerance for the addition of aniline derivatives
to primary alkynes. Within this series the metallocene [Cp*<sub>2</sub>Zn] is the most active one, whereas the zinc–zinc bonded species
[(η<sup>5</sup>-Cp*)<sub>2</sub>Zn<sub>2</sub>] shows the best
selectivity. Most remarkable is the unexpected excellent catalytic
performance of the zinc–zinc bonded species [(η<sup>5</sup>-Cp*)<sub>2</sub>Zn<sub>2</sub>].
2012-10-22 00:00:00
organometallic zinc compound
equimolar amounts
species
reaction rates
Diethylzinc Et 2Zn
PhNMe 2H
Intermolecular Hydroamination ReactionA comparison
group tolerance
ZnEt 2
hydroamination reaction
aniline derivatives
Cp
compounds show