ARKIVOC,
Journal Year:
2023,
Volume and Issue:
2023(1)
Published: March 14, 2023
The
application
of
biopolymers
in
organic
chemistry,
especially
catalysis,
has
been
an
active
research
area
recent
years.Alginates
are
constituents
brown
algae
cell
walls;
they
naturally
occurring
polysaccharides.Renewability,
high
surface
area,
low
cost,
availability,
chemical
stability
and
the
abundance
functional
groups
their
structure
make
them
promising
alternatives
for
oil-derived
or
hazardous
metallic
components
catalytic
systems.The
present
review
provides
overview
studies
on
using
alginates
systems
more
profoundly
focuses
reported
concerning
direct
applications
alginic
acid
sodium
alginate
synthesis.
New Journal of Chemistry,
Journal Year:
2021,
Volume and Issue:
45(28), P. 12328 - 12345
Published: Jan. 1, 2021
This
review
describes
the
evolution
and
application
of
active
metal-based
heterometallic
NPs
as
efficient
heterogeneous
catalysts
for
synthesis
pyridine
derivatives
by
multicomponent
reactions
in
last
decade
(2010–2020).
Applied Organometallic Chemistry,
Journal Year:
2021,
Volume and Issue:
35(8)
Published: May 7, 2021
Co
3
O
4
and
Eu‐doped
nanocatalysts
were
synthesized
through
an
ultrasonic‐assisted
solvothermal
method
characterized
with
X‐ray
diffraction
(XRD),
Fourier
transform
infrared
(FT‐IR),
energy‐dispersive
(EDX),
field‐emission
scanning
electron
microscopy
(FESEM)
methods.
Spinel
cubic
crystalline
system
for
was
confirmed
XRD,
whereas
the
spherical
morphology
of
changed
to
nanorods
after
Eu
3+
doping,
which
affirmed
FESEM
micrographs.
Catalytic
performance
nanomaterials
examined
synthesis
2‐amino‐4
H
‐benzochromenes
using
aromatic
aldehydes,
malononitrile,
β‐naphthol
condensation
under
solvent‐free
conditions
microwave
irradiation.
Mild
reaction
conditions,
short
times,
simple
setup,
affordable
catalyst,
high‐quality
products
some
advantages
this
procedure.
The
efficiency
nanocatalyst
achieved
by
about
96%.
Journal of Heterocyclic Chemistry,
Journal Year:
2020,
Volume and Issue:
57(11), P. 3961 - 3969
Published: July 24, 2020
Abstract
An
efficient
and
straightforward
protocol
for
one‐pot,
three‐component
reaction
of
aryl
glyoxal
monohydrates
1a‐h
,
5‐amino‐1‐aryl‐3‐methylpyrazoles
2a
b
4‐hydroxyquinoline‐2(1
H
)‐one
(
3
)
or
2‐hydroxy‐1,4‐naphthoquinone
4
using
silver
nanoparticles
(AgNPs)
as
a
high
performance
nanocatalyst
in
2
O/EtOH
at
60°C
afforded
the
corresponding
polyfunctionalized
benzo[
h
]pyrazolo[3,4‐
][1,6]naphthyridines
5a‐h
g
]quinolines
6a‐i
respectively.
Excellent
catalytic
activity,
yields,
employing
green
media
nanocatalyst,
cost‐effective
simple
procedure
are
some
notable
advantages
AgNPs
noble
metal
this
synthetic
strategy.
The
structures
fused
heterocycles
were
confirmed
by
their
Fourier
transform
infrared,
proton
nuclear
magnetic
resonance
1
H‐NMR),
13
C‐NMR
spectral
data
microanalysis.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: June 21, 2023
The
pyranoquinoline
derivatives
are
synthetically
important
due
to
their
biological
properties.
In
this
research,
these
were
produced
through
an
environmentally
friendly
method.
This
method
includes
the
use
of
CuMnxOy
(x
=
2,
and
y
4)-GO
as
a
nanocatalyst,
which
is
easy
produce,
has
excellent
performance,
cost-effectiveness,
recyclability
among
its
features,
also
water
green
solvent.
Pyranoquinolines
one-pot,
multi-component
reaction
between
different
aryl
glyoxal,
ethyl
cyanoacetate,
4-hydroxyquinoline-2(1H)-one
synthesized
using
K2CO3,
H2O.
Also,
structure
CuMnxOy-GO
nanocatalyst
was
evaluated
confirmed
via
analyses.
distinguishing
features
work
compared
previous
works
workup,
facile
synthesis
process,
provide
high
yields
products.
