ACS Omega,
Год журнала:
2024,
Номер
9(26), С. 28114 - 28128
Опубликована: Июнь 21, 2024
The
present
work
aims
at
preparing
the
EDTA–Zn(II)
complex─supported
on
amine-functionalized
MIL-101(Cr)
MOF─as
a
new
and
effective
heterogenized
catalyst.
optimization
of
hydrothermal
process
shows
that
120
°C
is
best
condition
to
grow
MIL-101(Cr)–NH2
MOF
crystals.
Moreover,
regarding
use
postsynthetic
modification
(PSM)
method,
hexadentate
EDTA
was
grafted
this
support
via
simple
aminolysis
before
further
coordinating
it
with
Zn
ions
create
corresponding
Zn(II)
catalytic
complex.
activity
compound
then
investigated
in
context
one-pot
synthesis
polyhydroquinolines.
This
approach
has
number
advantages
including
following:
solvent
not
hazardous,
applying
porous
catalyst
inexpensive,
secure,
recyclable;
rapid
reaction
times,
high
levels
efficiency,
simplicity
separation.
Accordingly,
question
can
be
given
label
"green
chemistry".
New Journal of Chemistry,
Год журнала:
2020,
Номер
44(7), С. 2919 - 2929
Опубликована: Янв. 1, 2020
Anl-methionine–Pd
complex
was
covalently
immobilized
on
the
surface
of
hercynite
(FeAl2O4)
MNPs,
and
its
catalytic
properties
were
studied
in
C–C
coupling
reactions.
Scientific Reports,
Год журнала:
2022,
Номер
12(1)
Опубликована: Янв. 27, 2022
Abstract
A
three-dimensional
walnut-like
Zn-based
MOF
microsphere
system
was
designed
and
synthesized
via
hydrothermal
reaction
of
zinc
salt
with
4,6-diamino-2-pyrimidinethiol
as
a
tridentate
ligand.
Besides,
Zn
ions
were
coordinated
to
the
functional
groups
ligand
give
novel
Zn-MOF
material.
Afterward,
resultant
material
thoroughly
characterized
using
various
analysis
physico-chemical
methods;
including,
FT-IR,
XRD,
TGA,
EDX,
X-ray
mapping,
SEM,
TEM,
BET
analysis.
The
microspheres
utilized
in
Hantzsch
for
selective
synthesis
asymmetric
polyhydroquinolines,
aromatic
aldehydes.
Our
strategy
aims
at
providing
controlled
hierarchically
nanoporous
well-defined
morphology,
structure,
excellent
catalytic
properties.
it
would
result
having
promising
heterogeneous
catalyst
good
yields,
short
time,
low
limit
steric
hindrance
electronic
effects.
Moreover,
heterogeneity
is
further
tested
hot
filtration
also
reusability
results
point.
RSC Advances,
Год журнала:
2022,
Номер
12(5), С. 2770 - 2787
Опубликована: Янв. 1, 2022
Herein,
we
report
the
synthesis
of
hercynite@sulfuric
acid
as
a
novel
nanomagnetic
solid
catalyst,
containing
sulfuric
catalytic
sites
on
surface
hercynite
MNPs
support.
Applied Organometallic Chemistry,
Год журнала:
2022,
Номер
36(6)
Опубликована: Март 1, 2022
Abstract
A
highly
stable
and
efficient
heterogeneous
catalyst
was
successfully
prepared
by
hydrothermal
reaction
of
Zinc
nitrate
with
citric
acid.
To
produce
a
novel
Zn‐based
MOF
catalyst,
Zn
ions
were
coordinated
the
ligand
functional
groups
that
can
be
regarded
as
an
alpha‐hydroxy
acid
containing
three
carboxylic
acids
(COOH)
one
hydroxyl
(OH)
group
attached
to
three‐carbon
skeleton.
It
found
Zn‐CA‐MOFs
compound
participate
in
synthesis
5‐substituted
1H‐tetrazole
pyranopyrazole
molecules,
selectively
efficiently
high
yield
short
period
time.
As
presented,
demonstrates
excellent
reusability
stability
recycled
up
five
times
without
significant
loss
reactivity.
Heterogeneity
analysis
showed
no
leaching
active
species
occurred
during
recycling
process
Zn‐CA‐MOFs.
RSC Advances,
Год журнала:
2022,
Номер
12(40), С. 26023 - 26041
Опубликована: Янв. 1, 2022
Herein,
we
delignated
the
synthesis
of
a
novel
inorganic
sulfurous
magnetic
solid
acid
catalyst
by
immobilization
an
extremely
high
content
sulfuric
functionalities
on
amorphous
silica-modified
hercynite
nanomagnetic
core-shell
via
simple
method.
Silica
(SSA)
modified
nanocomposite
(hercynite@SSA)
combines
excellent
recoverability
and
stability
characteristics
(which
can
be
regarded
as
ferro
spinel
with
Fd3m
space
group
cubic
crystal
structure)
strong
Brønsted
properties
-SO3H
groups.
This
was
found
to
efficient
facile
for
bis(pyrazolyl)methanes
two
different
one-pot
multicomponent
methodologies
under
green
conditions.
The
hercynite@SSA
shows
catalytic
activity
reusability
in
ethanolic
medium
among
materials.
A
plausible
reaction
mechanism
is
proposed
this
synthesis.
