Photoelectrochemical upcycling of PVC plastic waste for the synthesis of chlorinated quinolinone derivatives
Organic Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Herein,
an
environmentally
friendly
methodology
has
been
established
for
the
photoelectrochemical
chlorination
of
C(sp
2
)–H
bonds
in
quinolinone
derivatives
using
PVC
plastic
waste
as
chlorine
source.
Язык: Английский
Transition-Metal-Free C–H Trifluoromethylthiolation of N,N-Disubstituted Enaminones To Access CF3S-Functionalized Enaminones and Their Application in the Synthesis of CF3S-Heteroaryls
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(12), С. 9078 - 9085
Опубликована: Июнь 3, 2024
The
α-C–H
trifluoromethylthiolation
of
N,N-disubstituted
enaminones
has
been
achieved
with
simple
and
cheap
CF3SO2Na
as
the
CF3S
source.
reactions
were
run
at
mild
temperature
(0
°C
to
rt)
using
POCl3
only
reducing
reagent.
work
represents
first
example
on
synthesis
α-trifluoromethylthio
via
direct
C–H
functionalization.
In
addition,
resulting
CF3S-functionalized
have
proven
useful
building
blocks
in
various
heteroaromatic
compounds
by
annulation
reactions.
Язык: Английский
Recent advances in multicomponent synthesis of pyrazoles
Organic & Biomolecular Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Pyrazole
moiety
is
considered
as
an
important
N-heterocycle
in
pharmaceuticals
and
many
other
functional
molecules.
The
utilization
of
multicomponent
reaction
a
major
tool
the
current
approaches
pyrazole
synthesis.
Considering
power
significance
synthesis,
we
review
herein
latest
developments
this
field.
According
to
typical
features,
contents
are
divided
into
reactions
with
different
NN
fragment
sources,
such
hydrazine,
hydrazone,
amidine,
nitrile,
diazo
compounds,
ring
construction,
covering
works
published
since
2019
date.
Язык: Английский
Photocatalytic Annulation of Enaminones with Thioureas for the Synthesis of 2-Aminothiazoles via Tandem C–S and C–N Bond Formation
Synthesis,
Год журнала:
2024,
Номер
56(16), С. 2565 - 2571
Опубликована: Апрель 26, 2024
Abstract
Visible-light
photocatalytic
reactions
between
enaminones
and
thioureas
leading
to
thiazole
products
have
been
achieved.
The
annulation
process
consists
of
tandem
C–S
C–N
bond
formation
by
running
under
air
atmosphere
at
ambient
temperature.
Broad
substrate
tolerance
the
sustainable
protocol
has
verified
practical
synthesis
divergent
thiazoles
with
both
monocyclic
fused
cyclic
structures.
Язык: Английский
Electrochemically Enabled Synthesis of Multi-substituted Pyrazoles via a Radical Cyclization Cascade
Green Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
We
have
developed
a
mild
and
efficient
electrochemical
reduction
approach
employing
aryl
diazonium
salts
as
dual
synthons
to
synthesize
valuable
multi-substituted
pyrazoles
for
the
first
time.
Язык: Английский
Sustainable Synthesis of Pyrazole Derivatives Utilizing Recyclable SnO–CeO2 Nanocomposite as Heterogeneous Catalyst
Topics in Catalysis,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 2, 2025
Язык: Английский
Electrocatalytic Cleavage of C–C Bonds in Lignin Models Using Nonmetallic Catalysts at Ambient Conditions
Guangyong Liu,
Ziqi Zhai,
Yumiao Lu
и другие.
Chem & Bio Engineering,
Год журнала:
2024,
Номер
1(4), С. 357 - 365
Опубликована: Фев. 26, 2024
Lignin,
characterized
by
its
amorphous,
heavily
polymerized
structure,
is
a
primary
natural
source
of
aromatic
compounds,
yet
complex
constitution
poses
considerable
challenges
in
transformation
and
utilization.
Therefore,
the
selective
cleavage
C-C
bonds
represents
critical
challenging
step
lignin
degradation,
essential
for
production
high-value
compounds.
In
this
study,
we
report
simple
electrocatalytic
approach
valorization
via
bond
developing
nonmetallic
electrocatalyst
carbon-based
materials.
It
found
that
hydrophilicity
hydrophobicity
have
significant
effect
on
degradation
process.
Under
mild
conditions,
hydrophilic
carbon
paper
exhibits
100%
substrate
conversion,
yielding
97%
benzaldehyde
96%
quinone
with
ionic
liquid
electrolytes.
The
mechanism
study
shows
catalyst
higher
surface
defects
favors
electron
transfer
oxidative
process
bonds.
These
results
signify
substantial
advancement
offering
an
environmentally
friendly,
metal-free
electrochemical
route.
Язык: Английский
Electrochemical oxidative selective halogenation of pyrazolones for the synthesis of 4-halopyrazolones
Organic & Biomolecular Chemistry,
Год журнала:
2024,
Номер
22(30), С. 6080 - 6084
Опубликована: Янв. 1, 2024
An
efficient
and
environmentally
friendly
electrochemical
oxidative
selective
halogenation
of
pyrazolones
has
been
developed
under
conditions
free
metals,
external
oxidants,
supporting
electrolytes.
The
reaction
demonstrates
good
functional
group
tolerance
maintains
high
efficiency
in
large-scale
synthesis,
yielding
moderate
to
excellent
yields
the
desired
4-halopyrazolones.
This
method
provides
a
green
convenient
route
for
direct
installation
halogen
moiety
into
bioactive
pyrazolone
derivatives,
which
can
be
utilized
myriad
applications.
Язык: Английский
Electrochemical Heterocyclic Ring-Formation Reactions by Making C–N and N–N Bonds
Topics in heterocyclic chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Язык: Английский
Zinc‐Catalysed [3+2] Cycloaddition of Enaminone with Tosylhydrazide to Synthesise 1H‐pyrazole via C–N and S–N Bond Cleavage
Asian Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 14, 2024
Abstract
A
novel
and
practical
zinc‐catalysed
synthesis
of
1
H
‐pyrazole
has
been
developed.
The
one‐pot
protocol
enables
the
cycloaddition
enaminone
tosylhydrazide
via
C−N
S−N
bond
breaking
process,
leading
to
diverse
mono‐substituted
pyrazole
derivatives
in
high
yields.
Moreover,
easily
accessible
materials,
broad
substrate
scope
with
excellent
functional
group
tolerance,
ease
isolation
open‐air
conditions
are
key
features
present
method.
Язык: Английский