Organics,
Journal Year:
2024,
Volume and Issue:
5(4), P. 443 - 449
Published: Oct. 22, 2024
Pd
EnCat™
30
is
a
palladium
catalyst
broadly
used
in
several
hydrogenation
and
cross-coupling
reactions.
It
known
for
its
numerous
beneficial
features,
which
include
high-yielding
performance,
easy
recovery,
reusability.
However,
the
available
data
regarding
recyclability
Suzuki
coupling
reactions
are
limited
to
few
reaction
cycles
and,
therefore,
fail
explore
full
potential.
Our
work
focuses
on
investigating
extent
of
reusability
by
measuring
performance
according
isolated
yields
product.
findings
demonstrate
that
can
be
reused
over
minimum
cycles,
advantageous
terms
cost
reduction
more
sustainable
chemical
production.
Applied Organometallic Chemistry,
Journal Year:
2024,
Volume and Issue:
38(3)
Published: Jan. 4, 2024
Boehmite
is
one
of
the
stable
phases
alumina
that
easily
available,
and
it
also
has
a
variety
applications.
Therefore
in
this
work,
for
preparation
AlOOH,
Sodium
hydroxide
(NaOH)
solutions
was
added
to
aluminum
nitrate
nonahydrate
(Al(NO
3
)
.9H
2
O)
solution.
Then,
surface
AlOOH
modified
with
(3‐aminopropyl)triethoxysilane
(APTES),
due
high
condensation
hydroxyl
groups
on
its
surface.
di(pyridin‐2‐yl)methanone
(di(PM))
immobilized
toward
synthesis
Schiff‐base
(di(PM)@AlOOH)
as
heterogeneous
ligand.
Finally,
palladium
complex
(Pd‐di(PM)@AlOOH)
reusable,
practical,
novel
nanocatalyst.
Pd‐di(PM)@AlOOH
characterized
by
thermogravimetric
analysis
(TGA)
analysis,
Fourier‐transform
infrared
spectroscopy
(FT‐IR),
transmission
electron
microscopy
(TEM),
scanning
microscope
(SEM)
imaging,
energy‐dispersive
X‐ray
(EDS)
wavelength‐dispersive
(WDX)
inductively
coupled
plasma
(ICP)
analysis.
After
characterization
Pd‐di(PM)@AlOOH,
performance
used
highly
stable,
retrievable,
hybrid
organic–inorganic
catalyst
C‐C
coupling
Suzuki
reaction.
The
hot
filtration
study
revealed
acts
heterogeneously
We
found
can
be
recycled
five
runs
without
leaching,
studied
test
ICP
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
This
study
introduces
a
novel
method
for
functionalizing
natural
asphalt,
presenting
new
opportunities
upgrading
asphaltenes
from
road
to
catalyst.
The
process
utilizes
metal-free
sonobromination
technique
in
acetic
acid
incorporate
carbon-halogen
substituents
onto
asphalt.
These
sites
are
then
targeted
by
nucleophilic
substitution
with
diethanolamine,
followed
complexation
Pd(0)
create
unique
palladium
complex
grafted
stabilized
serves
as
heterogeneous
and
recoverable
catalyst
the
Suzuki
reaction.
facilitates
reaction
between
aryl
boronic
acids
various
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(1), P. 53 - 53
Published: Jan. 12, 2024
A
nanocatalyst
comprising
ultra-small
palladium
nanoparticles
supported
on
nanodiamonds
(ultra-small
Pd/rNDs)
was
fabricated
via
a
reduction
of
(II)
salt
oxidized
nanodiamond.
The
prepared
catalyst
characterized
using
XRD,
XPS,
ICP-MS,
AAS,
and
TEM/HRTEM
techniques,
including
STEM-EDS
chemical
mapping,
which
revealed
that
the
modified
material
is
combination
reduced
nanodiamond
decorated
with
nanoparticles.
as-prepared
well-characterized
Pd
rNDs
displayed
superb
catalytic
activity
for
Suzuki–Miyaura
cross-coupling
reactions
at
low
temperature
without
any
toxic
solvents,
to
obtain
respective
products
in
good-to-excellent
yields
(75–98%).
easily
separated
from
reaction
solution
reused
four
times
loss
or
stability.
Synlett,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 9, 2025
Abstract
Carbon–carbon
(C–C)
bond
formation
reactions
have
contributed
significantly
to
the
construction
of
numerous
important
molecules
that
in
various
dimensions.
Heterogeneous
catalysts
are
recyclable
and
can
convert
a
chemical
reaction
with
same
affinity
as
homogeneous
counterpart
provide
an
economically
viable
path.
This
account,
therefore,
focuses
on
different
types
C–C
triggered
by
transition
metal
supported
mostly
zeolite-Y
few
oxide
nanocatalysts.
The
account
comprises
our
recent
works
devoted
performed
such
heterogeneous
including
photocatalysts.
1
Introduction
2
Biaryl
Synthesis
C–Cl
Bond
Activation
3
3,3′-Bis(indolyl)methanes
4
C2
Trimerization
Indoles
5
Cross-Aldol
Condensation
Reaction
6
Friedel–Crafts
Benzylation
Naphthol
Phenol
7
Oxidative
Coupling
Naphthols
8
Conclusion
Dalton Transactions,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Phosphine-free
catalysts
for
the
Mizoroki-Heck
cross-coupling
reaction
offer
significant
advantages
in
terms
of
air
and
moisture
stability.
We
synthesized
two
palladium(II)
complexes
featuring
a
thiolate-imine-thioether
SNS
pincer
ligand:
Pd(κ2-SNSMe)2
(Pd-1)
PdI(κ3-SNSMe)
(Pd-2).
Their
catalytic
activities
were
compared,
with
Pd-2
demonstrating
excellent
reactivity
at
low
catalyst
loading
1.5
mol%,
efficiently
producing
olefin
products
across
various
substrates
within
5
hours.
Conversely,
Pd-1
showed
no
activity
due
to
its
isomerization
Pd(II)-N2S2
complex
via
imine
C-C
bond
formation
elevated
temperatures,
which
restricted
access
coordination
sites
necessary
oxidative
addition
alkene
coordination.
Heating
excess
NEt3
affords
Pd
dithiolate
tetramer,
[Pd(μ-κ3-SNS)]4via
selective
C-S
activation.
The
design
and
synthesis
of
a
series
palladium-loaded
hyper-cross-linked
polymer
(HCP)
catalysts,
demonstrating
high
catalytic
activity
excellent
cycling
stability
in
Suzuki–Miyaura
Buchwald–Hartwig
coupling
reactions
is
reported.
By
employing
pyridine-functionalized
BIAN-NHC
as
the
building
unit,
HCPs
with
rich
hierarchical
pore
structures
surface
areas
were
prepared.
Notably,
HCP-BIAN-Pd-2
exhibited
superior
achieved
99%
yield
less
reactive
benzyl
chloride,
maintaining
95%
even
after
10
cycles.
This
study
addresses
issues
cost,
toxicity,
recyclability
associated
traditional
homogeneous
palladium
significantly
enhancing
by
selectively
introducing
ligands.
These
findings
highlight
immense
potential
these
catalysts
for
large-scale
production
practical
applications,
underscoring
their
significant
implications
field
heterogeneous
catalysis.
