SSRN Electronic Journal,
Год журнала:
2022,
Номер
unknown
Опубликована: Янв. 1, 2022
A
new
nitrogen-rich
hyperbranched
polymer
comprising
imidazolium
and
triazole
moieties
used
for
stabilization
of
Pd
nanoparticles.
The
resulting
material,
PolyTZ-IL@Pd
NPs,
was
characterized
with
different
techniques
including
Fourier-transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
photoelectron
(XPS),
energy
dispersive
X-Ray
(EDX),
transmission
electron
microscopy
(TEM)
analysis.
NPs
has
been
as
an
efficient
catalyst
in
the
reduction
nitroarenes
to
amines
cyanation
aryl
bromides
iodides.
showed
high
stability
recyclability
recycled
at
least
10
times
1-chloro-4-nitrobenzene
5
iodobenzene.
Chemical Science,
Год журнала:
2023,
Номер
14(46), С. 13503 - 13507
Опубликована: Янв. 1, 2023
Palladium-catalyzed
reactions
that
involve
functionalized
substrates
are
oftentimes
problematic.
An
initial
Br-to-I
conversion
followed
by
an
immediate
cross
coupling
may
allow
for
the
targeted
C–C
bonds
to
be
obtained.
The Journal of Organic Chemistry,
Год журнала:
2022,
Номер
87(7), С. 4951 - 4954
Опубликована: Март 22, 2022
An
air-tolerant
nickel-catalyzed
cyanation
of
aryl
bromides
is
reported.
The
reaction
uses
a
NiCl2/Xantphos
catalyst
in
combination
with
substoichiometric
quantities
zinc
cyanide
and
polymethylhydrosiloxane.
This
silane
green,
homogeneous
alternative
to
the
traditional,
insoluble
solid
reductant
renders
tolerant
air.
can
be
performed
under
an
air
atmosphere,
obviating
need
for
degassing,
glovebox,
or
Schlenk
techniques.
scope
broad,
proceeding
good
yields
variety
(hetero)arenes.
Angewandte Chemie,
Год журнала:
2022,
Номер
134(25)
Опубликована: Март 31, 2022
Abstract
Bioinspired
supramolecular
architectures
were
used
to
compartmentalize
highly
charged
aqua
scandium
ions
into
chiral
hydrophobic
scaffolds
for
Lewis
acid‐catalyzed
asymmetric
reactions.
Recycling
without
significant
loss
in
catalytic
performance
is
a
formidable
task,
especially
This
because
basic
impurities
derived
from
starting
materials,
products,
and
water
are
competitive
ligands
both
substrate
binding
metal
complexation,
thus
poisoning
the
acids
leading
their
leaching.
Even
when
aniline
used,
architecture
allowed
effective
suppression
of
Sc
3+
leaching
reuse
solvent‐catalyst
couples
ring‐opening
reactions
deactivation.
Application
thia‐Michael
addition
hydroxymethylation
was
also
demonstrated.
The
successful
recycling
environments
underpins
exceptionally
high
robustness
acid
catalyst.
SSRN Electronic Journal,
Год журнала:
2022,
Номер
unknown
Опубликована: Янв. 1, 2022
A
new
nitrogen-rich
hyperbranched
polymer
comprising
imidazolium
and
triazole
moieties
used
for
stabilization
of
Pd
nanoparticles.
The
resulting
material,
PolyTZ-IL@Pd
NPs,
was
characterized
with
different
techniques
including
Fourier-transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
photoelectron
(XPS),
energy
dispersive
X-Ray
(EDX),
transmission
electron
microscopy
(TEM)
analysis.
NPs
has
been
as
an
efficient
catalyst
in
the
reduction
nitroarenes
to
amines
cyanation
aryl
bromides
iodides.
showed
high
stability
recyclability
recycled
at
least
10
times
1-chloro-4-nitrobenzene
5
iodobenzene.
