Abstract
Potassium
periodate
(KIO
4
)
catalyzed
novel,
efficient
and
highly
regioselective
one‐pot
synthesis
of
substituted
benzimidazoles
has
been
carried
out
in
good
to
excellent
yields
via
condensation–cyclisation
reactions
involving
a
variety
aldehydes
o
‐phenylenediamines.
As
catalyst,
KIO
shows
compatibility
with
various
substrates,
easy
removal,
handling,
operational
simplicity,
work
mild
reaction
conditions.
A
comparative
study,
microwave
(MW)
versus
conventional
method,
for
synthesizing
2‐substituted
catalysis
is
also
described.
It
was
observed
that
the
irradiation
approach
improves
yield
minimizes
time
(from
hour
min),
represents
more
advantageous
eco‐friendly
quicker
chemistry.
RSC Sustainability,
Год журнала:
2023,
Номер
1(5), С. 1211 - 1222
Опубликована: Янв. 1, 2023
The
more
native-like
lignin
microwave
extracted
from
spruce
wood
greatly
reinforced
digital
light
processing
3D
printed
biobased
materials
already
at
low
concentration.
Current Organic Chemistry,
Год журнала:
2024,
Номер
28(13), С. 1023 - 1045
Опубликована: Март 19, 2024
Abstract:
The
reactivity
of
aldehydes
and
ketones
carries
great
potential
for
multicomponent
heterocyclizations.
These
reactions
are
convergent
highly
versatile
in
the
development
synthetic
methodologies
compound
families,
displaying
variations
substituents
their
structures.
Therefore,
they
have
been
regarded
as
an
important
tool
field
Green
Chemistry.
Furthermore,
prove
to
be
very
useful
studies
biological
activity,
where
small
structural
modifications
can
result
significant
differences.
Many
heterocyclizations
date
back
mid-19th
early
20th
centuries.
In
this
review,
we
aim
demonstrate,
through
some
these
reactions,
continuously
growing
improvements
concerning
development.
Additionally,
present
original
reported,
enabling
us
appreciate
evolution
chemical
representations
over
years
until
reaching
standardization
today.
ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(15), С. 6757 - 6764
Опубликована: Июль 24, 2024
All
solid-state
batteries
are
a
promising
alternative
to
conventional
liquid-based
lithium-ion
batteries.
To
achieve
cycling
performance
that
is
competitive
with
batteries,
solid
electrolytes
needed
highly
conductive
and
can
be
produced
low
costs.
Conventional
syntheses
using
resistance
furnace
often
time-
energy-consuming.
reduce
the
reaction
time
more
efficient
heating,
reactions
conducted
inside
microwave.
Due
excitation
of
molecular
vibrations,
this
method
allows
for
local
energy-efficient
heating
mixture.
This
study
investigates
synthesis
two
argyrodite
Li6PS5Cl
Li5.5PS4.5Cl1.5
in
Furthermore,
ionic
transport
as
catholytes
tested.
With
rapid
times,
it
shown
conducting
synthesized
less
than
an
hour
performances
comparable
from
reactions.
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(47)
Опубликована: Авг. 2, 2024
Abstract
The
Kröhnke
Pyridine
Synthesis
has
been
discovered
about
six
decades
ago
(1961),
by
Fritz
and
Wilfried
Zecher
at
the
University
of
Giessen.
original
method
involved
reaction
α‐pyridinium
methyl
ketone
salts
with
α,β‐unsaturated
carbonyl
compounds
in
presence
a
nitrogen
source,
frequently
ammonium
acetate.
Since
its
discovery,
methodology
demonstrated
to
be
suitable
for
preparation
mono‐,
di‐,
tri‐
tetra‐pyridines,
important
applications
several
research
fields.
Over
years,
number
modifications
approach
have
developed
reported,
enabling
broad
applicability
these
methods
even
modern
days,
also
synthesis
non‐pyridine
compounds.
In
this
critical
tutorial
review,
we
will
thoroughly
explore
discuss
potential
method,
refinements
that
made
over
as
well
some
arising
from
each
type
pyridine
and/or
produced
Kröhnke's
approach.
Frontiers in Chemistry,
Год журнала:
2024,
Номер
12
Опубликована: Июль 10, 2024
The
Heck
reaction
is
widely
employed
to
build
a
variety
of
biologically
relevant
scaffolds
and
has
been
successfully
implemented
in
the
production
active
pharmaceutical
ingredients
(APIs).
Typically,
with
terminal
alkenes
gives
high
yields
stereoselectivity
toward
Sustainable Energy & Fuels,
Год журнала:
2024,
Номер
8(20), С. 4752 - 4766
Опубликована: Янв. 1, 2024
The
forecasted
increase
in
wind
power
capacity
combined
with
the
proximate
end-of-life
of
existing
infrastructures
will
pose
a
significant
challenge.
main
novel
recycling
technologies
for
WBCMs
and
its
industrialization
barriers
are
presented.
Biomacromolecules,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 13, 2024
The
modern
chemistry
has
the
main
focus
of
saving
resources
and
developing
synthetic
strategies
characterized
by
intrinsic
efficiency,
ease
safety
in
operation,
short
reaction
time,
reduced
energy,
waste.
Natural
polysaccharides
are
largely
distributed
plant/animal
cells;
other
words,
they
often
provided
renewable
sources.
This
characteristic
makes
them
suitable
compounds
to
be
investigated
for
their
employment
as
biodegradable
material.
In
addition,
natural
have
been
proven
a
wide
range
applications,
this
prompted
researchers
investigate
chemical
modifications
order
modulate
properties.
Herein
we
discuss
development
conjugation
some
with
substrates
effects
structural
modification
on
bioactivities.
Finally,
work
intends
provide
suggestions
perspectives
safe
sustainable
processes
polysaccharides.
General
procedures
for
the
rhodium-catalyzed
annulation
of
aryl/heteroaryl
O-pivaloyl
hydroxamic
acids
and
norbornadiene
have
been
developed.
Employing
as
an
acetylene
equivalent
enables
utilization
diverse
heterocyclic
substrates
this
transformation
which
fail
to
react
or
undergo
competitive
Lossen
rearrangement
under
previously
reported
conditions.
Microwave
heating
significantly
reduces
reaction
times
compared
conventional
protocols
allows
a
one-step
process
be
realized.
The
conditions
described
herein
adapted
gram-scale
synthesis
applied
formal
Pfizer
clinical
candidates.
Chemistry,
Год журнала:
2025,
Номер
7(1), С. 10 - 10
Опубликована: Янв. 17, 2025
A
novel
flow
process
to
produce
low-molecular-weight
(Mwt)
methacrylate
oligomer
mixtures
that
have
potential
as
vaccine
adjuvants
and
chain
transfer
agents
(CTAs)
is
reported.
The
chemistry
were
designed
significantly
reduce
the
number
of
stages
required
manufacture
methyl
oligomer-in-monomer
with
an
Mwt
range
dimers
pentamers
>50%
conversion.
Combining
rapid
in-flow,
in
situ
catalytic
polymerization
catalyst
synthesis
volumetric
microwave
heating
reaction
medium
resulted
being
completed
<4
min,
removing
need
pre-synthesize
it.
steady-state
operation
was
then
successfully
maintained
very
low
levels
external
energy,
utilized
exotherm.
outperformed
a
comparative
conventionally
heated
system
by
delivering
20%
increase
throughput
no
change
final
product
quality
or
Additionally,
combining
processing
enabled
use
more
oxidatively
unstable
catalyst.
This
allowed
for
deactivation
post-generation
oligomers,
such
residual
did
not
be
removed
prior
preparing
subsequent
adjuvant
CTA
screening
formulations.
Finally,
dielectric
property
measurements
able
monitor
onset
operation.
Applied Organometallic Chemistry,
Год журнала:
2025,
Номер
39(3)
Опубликована: Фев. 5, 2025
ABSTRACT
The
catalytic
efficacy
of
the
Lewis
acidic
site
in
Cu
3
(BTC)
2
MOF
was
compared
with
Brønsted
MIL‐101‐SO
H
MOF.
Both
and
MOFs
demonstrate
strong
conversion
rates
synthesis
2,4,5‐triaryl
imidazoles
through
a
one‐pot
multicomponent
reaction
under
microwave
condition.
This
outcome
underscores
stability
reusability
both
MOFs.
activity
relies
on
facile
accessibility
catalytically
active
centers/sites
to
reactants.
Superior
results
were
achieved
MOF's
sites
due
latter's
shortcomings
as
catalyst
2,4,5‐TSIs
(2,4,5‐trisubstituted
imidazoles).
can
be
reused
multiple
times
without
any
loss
its
activity,
demonstrated
by
hot
filtration
tests
various
analytical
techniques
such
FTIR,
powder
XRD,
SEM,
EDAX
conducted
fresh
catalysts.
