ACS Applied Nano Materials,
Год журнала:
2023,
Номер
7(1), С. 1265 - 1277
Опубликована: Дек. 22, 2023
Herein,
the
l-serine-functionalized
metal–organic
framework
nanostructure
is
obtained
via
a
simple
two-step
post-synthetic
modification
strategy.
Interesting
properties
of
serine,
such
as
existence
both
acidic
and
basic
groups,
provide
amphoteric
active
sites
on
UiO-66-NH2
that
are
not
accessible
through
direct
synthesis.
In
this
sense,
an
excess
amount
1,6
hexamethylene
diisocyanate
primarily
used
linker
to
allow
conversion
nucleophilic
groups
in
isocyanate
suitable
electrophile
group.
l-serine
reacted
with
generate
corresponding
urea
derivative.
SEM,
TEM,
nitrogen
adsorption
analyses
confirm
average
particle
size
approximately
24
nm
pore
6.68
within
framework.
Notably,
synthesized
nanomaterial
exhibited
high
catalytic
activity,
stability,
durability
solvent-free
procedures
synthesizing
diverse
range
4H-pyrano[2,3-b]
pyridine-3,6-dicarbonitriles
octahydropyrimido
[4,5
b][1,8]naphthyridine-7-carbonitriles.
Moreover,
catalyst
was
easily
separated─indicating
substantial
decrease
activity
upon
five
consecutive
runs
reaction.
RSC Advances,
Год журнала:
2023,
Номер
13(50), С. 35569 - 35582
Опубликована: Янв. 1, 2023
2,3-Dihydroquinazolin-4(1H)-one
and
tetrazole
are
a
class
of
nitrogen-containing
heterocyclic
compounds
that
play
an
important
role
in
drug
design
part
many
biological
industrial
compounds.
In
this
study,
aluminium-based
ionic
liquid
grafted
onto
biochar
surface
(BC/[TESPMI]AlCl4)
was
synthesized
used
as
catalyst
for
the
synthesis
series
derivatives
including
2,3-dihydroquinazolin-4(1H)-ones
ethanol
at
reflux
conditions
tetrazoles
PEG-400
110
°C.
All
products
were
obtained
with
good
selectivity
yield
90
to
97%.
The
thoroughly
characterized
using
various
techniques
such
thermogravimetric
analysis
(TGA),
energy-dispersive
X-ray
spectroscopy
(EDX),
powder
diffraction
(PXRD),
scanning
electron
microscopy
(SEM),
inductively
coupled
plasm
(ICP),
transmission
(TEM),
which
confirmed
successful
chemical
grafting.
This
methodology
has
several
advantages,
shorter
reaction
time,
high
product,
recyclability
catalyst.
remained
active
five
cycles.
Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
38(6)
Опубликована: Март 29, 2024
Copper,
an
abundant
metal
on
Earth,
has
re‐emerged
as
a
suitable
alternative
to
versatile
Palladium‐catalyzed
C–N
coupling.
Herein,
new
recoverable
and
reusable
bifunctional
catalyst
was
synthesized
by
combining
ionic
liquid
linking
Cu(II)
the
surface
of
Fe
3
O
4
nanoparticles.
New
nanocatalyst
(MNP@IAH@Cu‐IL)
completely
characterized
using
different
techniques.
Continuing,
MNP@IAH@Cu‐IL
applied
in
synthesis
primary
secondary
amines
via
C(sp
2
)‐N
coupling
reaction
successfully.
This
worked
well
anilines
derivatives
high
yields
excellent
quality.
Further,
we
described
novel
one‐pot
process
for
unsymmetrical
amine
from
two
aryl(alkyl)
halides.
procedure
shows
attractive
features
such
100%
atom
economy,
desired
products
under
base‐free
conditions,
functional
group
tolerance,
work‐up
simplicity,
recyclability.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Апрель 15, 2024
Abstract
In
this
research,
a
new
and
eco-friendly
heterogeneous
catalyst
(ND@Tannicacid-Cu)
was
synthesized
based
on
nanodiamond
copper
tannic
acid
via
esterification
process.
The
as-prepared
characterized
by
Fourier
transforms
infrared
spectroscopy
(FT-IR),
energy
dispersive
X-ray
(EDX),
scanning
electron
microscopy
(SEM),
diffraction
(XRD)
methods.
catalytic
efficacy
of
the
intended
examined
one-step
three-component
reaction
1,4-benzodiazepine
derivatives
from
mixture
ortho-phenylenediamine,
aromatic
aldehydes,
dimedone
under
mild
conditions.
all
instances,
corresponding
2,4-benzodiazepines
were
with
high
efficiency,
short
time,
straightforward
work
up
procedure,
no
requirement
for
column-chromatography,
cost-effective
catalyst.
easily
recycled
using
fillers,
it
can
be
reused
eight
cycles
without
significantly
diminishing
its
performance.
