Chemical Society Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
provides
an
overview
of
the
research
advaces
in
Ni-,
Cu-,
Fe-
and
Co-catalyzed
directed
C(sp
3
)–H
bond
functionalization
reactions;
including
design
principles,
mechanistic
discussions,
along
with
potential
applications
limitations.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 17, 2025
The
silylation
and
borylation
of
N-heteroarenes
are
essential
processes
for
preparing
key
building
blocks
in
organic
synthesis.
Ru–S
complex
1,
[(PEt3)Ru(DmpS)]+
(DmpS
=
2,6-dimesitylphenyl
thiolate),
catalyzes
both
C–H
N-heteroarenes.
Herein,
we
performed
a
density
functional
study
to
investigate
the
mechanisms
1
catalyzed
1-methylindole
using
hydrosilanes
dialkoxyhydroborane
(HBpin)
dialkylhydroborane
(9BBN).
mechanism
involves
four
main
steps:
(i)
Si–H/B–H
activation,
(ii)
silyl/boryl
transfer
1-methylindole,
(iii)
proton
abstraction
yield
silylated/borylated
product,
(iv)
H2
elimination
regenerate
1.
rate-determining
step
is
transfer.
Notably,
upon
B–H
bond
HBpin
fully
cleaved,
while
9BBN
remains
partially
intact.
Moreover,
instead
forming
silylium/borenium
ions,
Si–H
activations
lead
distinct
Si–H/B–H-activated
complexes:
thiosilane/thioborane-supported
Ru–H
complexes
hydrosilane
three-center
two-electron
Ru–H–B
9BBN.
Differences
bonding
interactions
affect
energy
barriers
Insights
into
these
electronic
structures
provide
foundation
designing
metal–ligand
cooperative
catalysts
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 11, 2025
The
homogeneous
catalytic
functionalization
of
methane
is
extremely
challenging
due
to
the
relative
nonpolarity
and
high
C–H
bond
strength
this
hydrocarbon.
Here,
using
quantities
(10
mol
%)
CpMn(CO)3
or
Cp*Re(CO)3,
conversion
benzene
bonds
C–Be
H–Be
by
CpBeBeCp
has
been
achieved
under
photochemical
conditions.
Possible
intermediates
in
beryllation
reactions─trans-bis(beryllyl)-manganese
-rhenium
complexes─were
also
isolated.
Quantum
chemical
calculations
indicate
that
inherent
properties
beryllyl
ligands─which
are
powerfully
σ-donating
feature
highly
Lewis
acidic
beryllium
centers─are
decisive
enabling
these
systems.
Chemical Society Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
provides
an
overview
of
the
research
advaces
in
Ni-,
Cu-,
Fe-
and
Co-catalyzed
directed
C(sp
3
)–H
bond
functionalization
reactions;
including
design
principles,
mechanistic
discussions,
along
with
potential
applications
limitations.