Rearrangements and Stereomutations of Metallacycles
Derived from Allenes and Imidozirconium Complexes
Forrest E. Michael
Andrew P. Duncan
Zachary K. Sweeney
Robert G. Bergman
10.1021/ja045607k.s004
https://acs.figshare.com/articles/dataset/Rearrangements_and_Stereomutations_of_Metallacycles_Derived_from_Allenes_and_Imidozirconium_Complexes/3301021
The mechanisms of the rearrangements and stereoinversion of azametallacyclobutenes generated
via [2+2] cycloaddition of allenes and imidozirconium complexes have been studied. Metallacycles derived
from allenes bearing β-hydrogen atoms racemize at room temperature by reversible β-hydride elimination,
a process which is also responsible for their eventual conversion to monoazadiene complexes. Metallacycles
derived from diarylallenes racemize by reversible thermal bond homolysis at 95 °C; racemization of these
metallacycles is also catalyzed by mild oxidants.
2005-02-16 00:00:00
bond homolysis
Imidozirconium Complexes
Metallacycles Derived
monoazadiene complexes
room temperature
diarylallenes racemize
imidozirconium complexes