Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Окт. 29, 2024
In
this
study,
an
efficient
method
for
the
synthesis
of
benzoxazoles
by
coupling
catechols,
aldehydes
and
ammonium
acetate
using
ZrCl4
as
catalyst
in
ethanol
is
reported.
A
wide
range
(59
examples)
are
smoothly
produced
high
yields
(up
to
97%).
Other
advantages
include
large-scale
use
oxygen
oxidant.
The
mild
reaction
conditions
allowed
late-stage
functionalization,
facilitating
access
several
derivatives
with
biologically
relevant
structures
such
β-lactam
quinoline
heterocycles.
Croatica Chemica Acta,
Год журнала:
2022,
Номер
95(1)
Опубликована: Янв. 1, 2022
Visible
light
mediated
synthesis
of
benzoxazoles
from
benzanilides
under
an
air
atmosphere
at
room
temperature
is
reported
using
eosin
Y
as
organophotoredox
catalyst
by
functionalization
C-H/C-O
bond
formation.This
methodology
accepts
a
broad
range
functional
groups
and
affords
the
transition-metal-free
organic
photoredox
catalysis
very
mild
conditions.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Янв. 27, 2024
Abstract
Spirulina
algae
is
an
excellent
candidate
for
catalyst
preparation
due
to
its
reactive
functional
groups,
cost-effectiveness,
widespread
commercial
accessibility,
and
biodegradability.
In
this
study,
magnetized
was
used
the
synthesis
of
dihydroquinazolin-4(1H)-ones
(DHQZs)
as
catalyst.
Magnetized
produced
by
CoFe
2
O
4
sulfonation
method
using
chlorosulfonic
acid
create
[CoFe
-Sp-SO
3
H].
It
affirmed
various
techniques,
including
Fourier
transform
infrared
(FT-IR),
Vibrating
sample
magnetometry
(VSM),
Powder
X-ray
diffraction
(XRD),
Energy-dispersive
spectroscopy
(EDS),
Thermogravimetric
analysis
(TGA),
Transmission
electron
microscopy
(TEM),
Field
emission
scanning
(FE-SEM),
elemental
mapping
techniques.
DHQZs
accomplished
through
a
concise
one-pot,
three-component
reaction
involving
range
diverse
aldehydes,
isatoic
anhydride,
primary
aromatic
amine,
within
aqueous
medium.
The
offers
several
advantages,
green
conditions,
generation
new
2-furan-quinazolinone
derivatives,
chromatography-free
purification,
short
times,
appropriate
yield
product
(75–96%),
recyclability.
proposed
water
solvent
demonstrated
strong
synergistic
effect,
leading
prosperous
novel
dihydroquinazolinones
at
60
°C.
These
numerous
benefits
make
our
approach
highly
attractive
academic
research
industrial
applications.
Abstract
Organic
synthesis
involves
the
production
of
important
chemical
structures
using
scalable
and
cost‐effective
methods
that
are
also
environmentally
friendly.
In
this
review,
a
detailed
analysis
use
iodine
DMSO
in
various
synthetic
routes
for
preparation
valuable
targets
presented.
These
reduce
acceptance
on
expensive
additives
reagents,
offer
more
sustainable
solution
these
scaffolds.
Applied Organometallic Chemistry,
Год журнала:
2025,
Номер
39(6)
Опубликована: Май 2, 2025
ABSTRACT
This
study
discusses
the
development
of
an
effective
and
environmentally
friendly
C‐H
oxidation
process
for
creation
oxygenated
compounds
in
presence
tert
‐butyl
hydroperoxide
by
a
magnetically
recoverable
Fe
3
O
4
@SiO
2
‐FeL
Bpn
nanocomposite.
L
stands
deprotonated,
pyridine‐based,
four‐dentate,
bispicen
ligand.
The
synthesised
catalyst
was
characterised
Fourier‐transform
infrared
spectroscopy
(FTIR),
energy‐dispersive
X‐ray
analysis
(EDX),
diffraction
(XRD),
photoelectron
(XPS),
field
emission
scanning
electron
microscopy
(FESEM),
transmission
(FETEM),
dynamic
light
scattering
(DLS),
thermal
gravimetric
(TGA),
vibrating
sample
magnetometer
(VSM).
(40
mg)
introduced
as
TBHP
(4
eq)
varied
C–H
bonds
to
related
carbonyl
high
yields.
(5
used
synthesis
benzoxazole
derivatives
from
1
mmol
every
substrate
aldehydes,
ammonium
acetate,
catechol.
By
this
process,
vast
amounts
benzoxazoles
were
satisfyingly
obtained
H
under
moderated
situations,
whole
products
gained
with
excellent
results.
recovered
reaction
environment
through
simple
exterior
magnet
reused
three
times
without
any
remarkable
reactivity
loss.
Moreover,
hot
filtration
test
confirmed
heterogeneous
character
catalyst.
RSC Advances,
Год журнала:
2022,
Номер
12(32), С. 20968 - 20972
Опубликована: Янв. 1, 2022
A
metal-free
one-pot
multi-component
method
for
the
efficient
synthesis
of
2-aryl
benzoxazoles
via
coupling
catechols,
ammonium
acetate
and
alkenes/alkynes/ketones
using
an
I
2
–DMSO
catalyst
system
is
illustrated.
RSC Advances,
Год журнала:
2023,
Номер
13(35), С. 24789 - 24794
Опубликована: Янв. 1, 2023
An
efficient
one-pot,
three-component
process
for
the
synthesis
of
benzimidazole
derivatives
using
a
catalytic
amount
Fe(iii)
porphyrin
has
been
developed.
The
reaction
proceeds
via
domino
C-N
bond
formation
and
cyclization
reactions
benzo-1,2-quinone,
aldehydes
ammonium
acetate
as
nitrogen
source
to
selectively
produce
benzimidazole.
A
number
have
synthesized
this
method
in
high
yields
under
mild
conditions.
