This
study
describes
the
synthesis
of
palladium
nanoparticles
stabilized
from
tea
extracts
supported
on
magnetic
and
named
as
ION-SiO2/TE-Pd(0).
In
this
respect,
while
our
is
one
limited
number
studies
reported
for
catalytic
denitrogenative
coupling
arylbromide
arylhydrazine.
lead
to
construction
important
substituted
biaryls
easily
accessible
bromoarenes
bearing
various
substituents
with
82-92%
yields.
The
synthesized
nanocatalyst
were
characterized
using
structural
morphological
characterization
techniques.
It
was
also
observed
that
ION-SiO2/TE-Pd(0)
catalyst
had
good
activity
even
after
six
cycles.
Asian Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
12(6)
Published: May 10, 2023
Abstract
The
excellent
catalytic
activities
of
abnormal
NHC
carbene
complexes,
where
the
C2
position
remains
unaffected,
and
coordination
occurs
at
C4
or
C5
imidazolium
ring,
is
still
a
fascinating
but
scarce
area
research.
This
present
work
reports
palladium
complex
(
LPdBr
)
bearing
with
CNN
pincer
architecture.
It
synthesized
from
imidazolium‐based
quinoline
ligand
LH
Pd(OAc)
2
via
‐NH
deprotonation.
was
fully
characterized
by
NMR
spectroscopy
(1D
2D)
high‐resolution
mass
spectrometry
(HRMS).
structure
modes
are
further
confirmed
help
single‐crystal
X‐ray
diffraction.
studies
revealed
mode
in
carbon
ring
participates
bonding,
leaving
unaffected.
potential
investigated
Pd‐catalyzed
Suzuki‐Miyaura
coupling
various
aryl/heteroaryl
chlorides
different
aryl/naphthyl/phenanthryl
boronic
acids.
catalyst
successfully
activated
less‐activated
aryl
chloride
substrates.
also
exhibited
good
activity
1
mol%
Pd
loading
under
microwave
irradiation
green
solvent
water.
mechanism
cycle
proposed
HRMS.
Dalton Transactions,
Journal Year:
2023,
Volume and Issue:
52(38), P. 13608 - 13617
Published: Jan. 1, 2023
We
report
a
new
class
of
sterically-unsymmetrical
NHC
ligands.
The
evaluation
steric,
electronic
properties
and
coordination
chemistry
is
described.
Studies
catalytic
activity
in
Ag,
Pd
Rh-catalyzed
reactions
are
presented.
Organic & Biomolecular Chemistry,
Journal Year:
2023,
Volume and Issue:
21(7), P. 1384 - 1388
Published: Jan. 1, 2023
A
palladium-catalysed
carbon-carbon
bond-forming
reaction
via
deaminative/decarboxylative
cross-coupling
of
organoammonium
salts
with
carboxylic
acids
was
developed.
Under
the
conditions,
polyfluoroaromatic
acids,
propiolic
and
α-cyano
benzyl
acid
reacted
smoothly
ammonium
to
produce
corresponding
coupling
products
in
good-to-excellent
yields.
Catalysis Science & Technology,
Journal Year:
2023,
Volume and Issue:
13(17), P. 5131 - 5139
Published: Jan. 1, 2023
We
report
[Au(NHC)Cl]
complexes
featuring
IPr#
ligands
that
hinge
upon
modular
peralkylation
of
aniline.
Wingtip-flexible
[Au(Np#)Cl]
is
a
broadly
applicable
catalyst
with
the
reactivity
outperforming
[Au(IPr)Cl]
and
[Au(IPr*)Cl]
complexes.
Catalysis Science & Technology,
Journal Year:
2024,
Volume and Issue:
14(15), P. 4354 - 4365
Published: Jan. 1, 2024
External
oxidant-free,
recyclable
gold-catalyzed
cross-coupling
of
aryldiazonium
tetrafluoroborates
and
terminal
alkynes
has
been
achieved
by
using
2,2′-bipyridine
as
a
ligand.
ARKIVOC,
Journal Year:
2023,
Volume and Issue:
2023(2)
Published: July 22, 2023
Activation
of
carbon-nitrogen
sigma
bonds
has
attracted
significant
attention
in
recent
years
as
a
promising
approach
for
bond-breaking
and
bond-making
with
wide
range
applications.Although
C-N
are
inert,
due
to
their
high
bond
energy,
breaking
them
is
feasible
the
presence
suitable
catalyst.This
been
successfully
applied
numerous
reactions,
including
cross-coupling
making
it
popular
choice
field
organic
synthesis.Among
alkynylation
reaction
occupies
position
since
alkynes
one
privileged
intermediates
synthesis
foremost
molecules
great
importance
biology,
medicine,
material
science.This
mini-review
described
developments
various
efficient
strategies
reactions
through
catalytic
cleavage
both
C(sp
2
)-N
3
mechanistic
insights.
This
study
describes
the
synthesis
of
palladium
nanoparticles
stabilized
from
tea
extracts
supported
on
magnetic
and
named
as
ION-SiO2/TE-Pd(0).
In
this
respect,
while
our
is
one
limited
number
studies
reported
for
catalytic
denitrogenative
coupling
arylbromide
arylhydrazine.
lead
to
construction
important
substituted
biaryls
easily
accessible
bromoarenes
bearing
various
substituents
with
82-92%
yields.
The
synthesized
nanocatalyst
were
characterized
using
structural
morphological
characterization
techniques.
It
was
also
observed
that
ION-SiO2/TE-Pd(0)
catalyst
had
good
activity
even
after
six
cycles.
