Recent developments in alkene hydrosilylation utilizing manganese catalysts
Tetrahedron Letters,
Год журнала:
2023,
Номер
132, С. 154798 - 154798
Опубликована: Окт. 15, 2023
Язык: Английский
Manganese Phenoxyimine Complexes: Structures and Catalytic Activity in Reduction of Aromatic Aldehydes and Ketones
Опубликована: Янв. 1, 2025
Язык: Английский
Solvent-Free terminal alkyne hydrosilylation to β-(E)-vinylsilanes mediated by platinum(II) aminophosphine complexes
Journal of Catalysis,
Год журнала:
2025,
Номер
unknown, С. 116027 - 116027
Опубликована: Фев. 1, 2025
Язык: Английский
Manganese Phenoxyimine Complexes: Structures, Reactions, and Water-Assisted Hydrosilylation of Aldehydes
Journal of Organometallic Chemistry,
Год журнала:
2025,
Номер
unknown, С. 123634 - 123634
Опубликована: Март 1, 2025
Язык: Английский
Efficient and Regioselective Hydrosilylation of Alkynes to (E)‐β‐Vinylsilanes Using Dicobalt Complexes
Applied Organometallic Chemistry,
Год журнала:
2025,
Номер
39(6)
Опубликована: Май 19, 2025
ABSTRACT
Three
NNOPP
[R‐C
5
H
3
N‐C
N‐COH‐(C
6
4
‐PPh
2
)
,
L
1
:
R
=
OCH
H,
CF
]
ligands
are
synthesized
and
introduced
to
cobalt
centers.
The
corresponding
dicobalt
complexes[{R‐C
}Co
Cl
(
)],
which
bench‐stable,
developed,
respectively.
regioselective
hydrosilylations
of
terminal
alkynes
with
primary
silane
investigated
produce
E
)‐vinylsilanes
in
good
yields
excellent
regioselectivity,
complex
exhibits
the
highest
activity.
Язык: Английский
Co‐Catalyzed Hydrosilylation of Ketones under Base‐Free Conditions: A Convenient Route to Silyl Ethers or Secondary Alcohols
ChemCatChem,
Год журнала:
2023,
Номер
15(18)
Опубликована: Июль 24, 2023
Abstract
A
cobalt‐catalyzed
addition
of
hydrosilanes
to
unsaturated
carbon‐oxygen
bonds
has
been
developed,
relying
on
complexes
featuring
easily
accessible
and
inexpensive
PNP‐type
pincer
ligands.
wide
range
heterocyclic,
aliphatic,
aromatic
ketones,
including
those
containing
both
electron‐donating
electron‐withdrawing
substituents,
were
transformed
into
silyl
ethers
or
secondary
alcohols
with
high
yields.
An
important
feature
this
protocol
is
that
silanes
can
act
as
the
substrates
activators,
eliminating
need
for
external
additives
such
strong
bases.
Язык: Английский
Recent advances in the catalytic applications of NHC-early abundant metals (Mn, Co, Fe) complexes
Advances in organometallic chemistry,
Год журнала:
2024,
Номер
unknown, С. 181 - 270
Опубликована: Янв. 1, 2024
Язык: Английский
Hydrosilylation of Alkynes Catalyzed by an Iron(II) PCP Pincer Alkyl Complex
ChemCatChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 14, 2024
Abstract
Vinylsilanes
are
very
useful
building
blocks
in
organic
synthesis
and
have
widespread
applications
life
sciences
materials
chemistry.
Here
we
describe
the
potential
of
complex
cis
‐[Fe(PCP‐
i
Pr)(CH
2
CH
3
)(CO)
]
as
an
effective
catalyst
for
hydrosilylation
both
terminal
internal
alkynes
with
SiPhH
to
give
vinylsilanes.
The
reactions
were
typically
performed
a
loading
1
mol%
24
h
at
70
°C.
catalytic
reaction
is
initiated
by
migratory
insertion
CO
ligand
into
Fe─alkyl
bond
yield
acyl
intermediate,
which
reacts
silanes
form
16e
−
Fe(II)
silyl
[Fe(PCP‐
Pr)(SiPhH
)(CO)].
In
case
aliphatic
good
regioselectivity
(anti‐Markovnikov
addition)
toward
thermodynamically
more
stable
β
‐(
E
)‐vinylsilanes
ratios
up
10:90
was
achieved,
while
aromatic
selectivities
poor
Z
)‐
about
40:60.
With
unsymmetrical
alkynes,
two
possible
regioisomers
syn
‐addition
obtained
different
no
clear
trend
one
regioisomer.
Internal
symmetrical
yielded
exclusively
respective
‐products
high
yields.
Mechanistic
investigations
including
deuterium
labelling
studies
undertaken
provide
reasonable
mechanism.
Язык: Английский
Molybdenum-Catalyzed (E)-Selective Anti-Markovnikov Hydrosilylation of Alkynes
Molecules,
Год журнала:
2024,
Номер
29(24), С. 5952 - 5952
Опубликована: Дек. 17, 2024
Herein,
we
report
the
first
example
of
molybdenum-catalyzed
(E)-Selective
anti-Markovnikov
hydrosilylation
alkynes.
The
reaction
operates
effectively
with
utilization
minute
amounts
inexpensive,
bench-stable
pre-catalyst
and
ligand
under
mild
conditions.
Moreover,
this
process
features
advantages
simple
operation,
excellent
selectivity,
broad
functional
groups
tolerance.
Язык: Английский
Hydrosilylation of Arynes with Silanes and Silicon‐based Polymer
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(47)
Опубликована: Июнь 13, 2024
Abstract
Benzyne
derived
from
hexadehydrogenated
Diels
Alder
(HDDA)
reactions
was
found
to
be
an
efficient
hydrosilylation
acceptors.
Various
silanes
can
react
smoothly
with
HDDA‐derived
benzyne
give
the
arylation
products.
Lewis
acid
such
as
boron
trifluoride
etherate
accelerate
these
reactions.
Polyhydromethylsiloxane
(PHMS),
a
widely
used
organosilicon
polymer,
also
successfully
modified
using
our
method.
About
5
%
of
Si−H
bonds
in
polymer
were
inserted
by
benzynes,
giving
functional
PHMS
much
more
solubility
methanol
and
blue‐emitting
fluorescence
behavior.
Mechanism
research
shows
that
insertion
into
bond
probably
undergoes
synergistic
pathway,
which
is
quite
different
traditional
radical‐initiated
or
transition‐metal‐catalyzed
hydrosilylation.
Язык: Английский