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Research
projects in the
Rosenberg group
Our
current
projects focus on organosilicon and
organophosphorus chemistry, with
emphasis on homogeneous catalysis using
transition metal complexes,
mechanistic aspects of Si-H and P-H activation,
catalytic hydrophosphination, and the synthesis
of functionalized oligo- and polysilanes.
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Metal-mediated
P-C bond formation
We're interested in developing
metal
catalysts for the efficient, stereoselective
preparation of chiral
phosphines, which play an important role in fine
chemicals synthesis.
We have examined the participation of some
highly reactive terminal
phosphido complexes of ruthenium in addition and
substitution reactions
of the P-H bond in secondary phosphines.
Recently we have also begun
exploring the potential of Co and Mo complexes
in new types of P-H activation chemistry, with
the goal of widening substrate scope in
catalytic hydrophosphination chemistry.
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Synthetic
routes to functionalized
oligosilanes
Methods abound for the
construction of
organic molecules containing new C-C bonds, but
synthetic strategies
for incorporating Si-Si bonds are not nearly so
well established. We
can use metal catalysts to make organosilicon
reagents of variable
chain length, and then selectively incorporate
new side chains via
residual Si-H bonds using a Lewis acidic borane
catalyst. We're
exploring the scope of these strategies in the
production of new
reagents and polymers based on silicon.
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