An Efficient Supported Cu(I) Catalyst for the Amination of Aryl Halides with Sodium Azide
ChemNanoMat,
Год журнала:
2024,
Номер
10(6)
Опубликована: Март 27, 2024
Abstract
We
present
the
synthesis
and
characterization
of
a
new
Cu(I)
complex
supported
on
SBA‐15
as
catalyst
for
preparing
anilines
from
reaction
aryl
halides
with
sodium
azide.
The
support
was
modified
by
treating
it
sequentially
(3‐aminopropyl)
triethoxysilane
(APTES),
cyanuric
chloride,
2‐aminothiazole
(AT).
mesoporous
silica,
SBA‐15@BAT,
then
treated
CuI
solution
in
acetonitrile
to
give
SBA‐15@BAT‐Cu(I).
underwent
thorough
using
conventional
methods.
X‐Ray
photoelectron
spectroscopy
(XPS)
analysis
corroborated
presence
copper
+1
oxidation
state
catalyst.
sufficiently
catalyzed
amination
iodo‐,
bromo‐,
chloroarenes
NaN
3
.
centrifuged,
washed,
applied
subsequent
run.
investigated
effects
various
components
parameters
determine
optimal
conditions
reaction.
heterogeneous
exhibited
noticeable
stability
reused
over
seven
runs
slight
deactivation.
Язык: Английский
Catalysed Aryl Amine Syntheses via Azides: From Azidation of Aryl Halides to Azide Reduction and Direct Amination
ChemCatChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 6, 2024
Abstract
This
review
summarises
and
discusses
aryl
amine
azide
syntheses
from
halides
employing
azides.
The
majority
of
the
reported
reactions
proceed
with
copper
catalysis
or
mediation.
Often,
an
is
formed
in
first
step,
which
then
reduced
situ
to
a
second
step.
occurrence
reduction,
depends
on
chosen
reaction
conditions
substrates.
formation
only
azides
through
Cu‐mediated
C−N
bond
formations
discussed,
followed
by
mediated
catalytic
reduction
different
systems,
azidation
amines,
viz
.
azidation‐amination
strategies.
allows
for
synthesis
complex
heterocycles
multi‐step
one‐pot
procedures,
several
are
summarised
here.
Examples
application
synthesising
important
amines
employed
as
biologically
active
compounds,
materials
science
also
summarised.
Finally,
conducted
control
have
been
collected
discussed
combination
mechanistic
proposals.
literature
survey
us
pinpoint
design
criteria
valuable
includes
choice
such
solvent
system
additives,
involved
metal
promising
Язык: Английский
Azide-Assisted Growth of Copper Nanostructures and Their Application as a Carbon Supported Catalyst in Two-Step Three-Component Azide–Alkyne Cycloadditions
Langmuir,
Год журнала:
2023,
Номер
39(38), С. 13560 - 13570
Опубликована: Авг. 16, 2023
Copper
nanostructures
were
obtained
from
the
reduction
of
Cu(I)
under
mild
conditions
in
ethanol/water
using
sodium-l-ascorbate
and
sodium
azide
while
performing
an
amination
reaction.
When
halobenzene
substrate
was
reacted
presence
a
bulk
carbon
black
(CB)
support,
clustered
copper
sub-micrometer
particles
(SMPs)
microparticles
(MPs)
form.
The
growth
MPs
optimized,
supported
isolated
characterized
by
scanning
electron
microscopy,
energy
dispersive
X-ray
spectroscopy,
thermogravimetry,
inductively-coupled
plasma
mass
spectrometry.
are
mobile
within
CB
matrix
proved
to
be
active
catalysts
azide–alkyne
cycloaddition
(CuAAC).
catalytic
competency
assessed
two-step
three-component
benzyl
bromide,
azide,
phenylacetylene
as
model
reaction
optimized
applied
for
synthesis
triazole
compounds
with
varying
levels
functionalization.
recyclability
investigated,
depletion
modes
discussed,
fine-tuned
reach
good
recyclability.
This
demonstrates
broader
applicability
SMPs/MPs
CuAAC-catalyst
its
limitations.
Язык: Английский
C–H functionalization of aromatic amines for azidation catalyzed by Betti base coordinated copper(ii) complexes under ultrasonication
G. Premkumar,
Toka Swu,
Richa Gupta
и другие.
New Journal of Chemistry,
Год журнала:
2023,
Номер
47(33), С. 15677 - 15685
Опубликована: Янв. 1, 2023
Five
new
Betti
base
copper(
ii
)
complexes
(C1–C5)
are
successfully
synthesized
and
characterized
spectroscopically.
Язык: Английский