Angewandte Chemie,
Год журнала:
2024,
Номер
136(36)
Опубликована: Июнь 17, 2024
Abstract
Single‐atom
catalysts
have
emerged
as
cutting‐edge
hotspots
in
the
field
of
material
science
owing
to
their
excellent
catalytic
performance
brought
about
by
well‐defined
metal
single‐atom
sites
(M
SASs).
However,
huge
challenges
still
lie
achieving
rational
design
and
precise
synthesis
M
SASs.
Herein,
we
report
a
novel
strategy
based
on
hetero‐charge
coupling
effect
(HCCE)
prepare
SASs
loaded
N
S
co‐doped
porous
carbon
1
/NSC).
The
proposed
was
widely
applied
17
types
/NSC
composed
single
or
multi‐metal
with
integrated
regulation
coordination
environment
electronic
structure,
exhibiting
good
universality
flexible
adjustability.
Furthermore,
this
provided
low‐cost
method
efficiently
synthesizing
high
yields,
that
can
produce
more
than
50
g
catalyst
at
one
time,
which
is
key
large‐scale
production.
Among
various
as‐prepared
unary
be
Fe,
Co,
Ni,
V,
Cr,
Mn,
Mo,
Pd,
W,
Re,
Ir,
Pt,
Bi)
catalysts,
Fe
delivered
for
electrocatalytic
nitrate
reduction
NH
3
Faradaic
efficiency
86.6
%
yield
rate
1.50
mg
h
−1
cat.
−0.6
V
vs.
RHE.
Even
using
cathode
Zn‐nitrate
battery,
it
exhibited
open
circuit
voltage
1.756
energy
density
4.42
mW
cm
−2
cycling
stability.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(36)
Опубликована: Июнь 17, 2024
Single-atom
catalysts
have
emerged
as
cutting-edge
hotspots
in
the
field
of
material
science
owing
to
their
excellent
catalytic
performance
brought
about
by
well-defined
metal
single-atom
sites
(M
SASs).
However,
huge
challenges
still
lie
achieving
rational
design
and
precise
synthesis
M
SASs.
Herein,
we
report
a
novel
strategy
based
on
hetero-charge
coupling
effect
(HCCE)
prepare
SASs
loaded
N
S
co-doped
porous
carbon
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
ATMP
inhibits
the
homogeneous
catalytic
oxidation
of
Co
ions
by
chelation
coordination,
preventing
decomposition
electrolyte.
Meanwhile,
it
can
form
a
stable
CEI
film
at
interface,
slowing
down
side
reactions.
The Journal of Organic Chemistry,
Год журнала:
2025,
Номер
90(5), С. 1982 - 1995
Опубликована: Янв. 23, 2025
We
report
a
base-promoted,
metal-free
multicomponent
tandem
reaction,
involving
[4
+
1
1]
cycloaddition
process
between
ortho-substituted
nitroarenes,
aldehydes,
and
ammonium
salts.
Modifying
the
substituents
on
nitroaromatic
compounds
effectively
provides
structurally
diverse
2-substituted
4-alkenylquinazolines
with
good
to
excellent
yields
(77%-90%
quinazoline
51
examples)
high
tolerance
for
various
inorganic
salts
(13
examples,
such
as
NH3·H2O,
NH4Cl,
NH4HF2).
A
new
method
constructing
2,4-substituted
selectivity
from
simple
nitrogen
source
was
developed,
reaction
can
be
scaled
up
gram
scale.
Additionally,
this
also
facilitates
preparation
of
organic
molecules
photophysical
properties,
offering
insights
into
further
transformation
quinazolines.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 11, 2025
Despite
their
significant
importance
in
numerous
fields,
the
challenges
direct
and
diverse
synthesis
of
γ-amino-α-hydroxybutyric
acids
(AHBAs)
pose
substantial
obstacles
to
explore
functions.
Here,
by
preparation
a
N-doped
carbon-supported
bifunctional
cobalt
catalyst
(Co-DAPhen/C),
it
was
applied
develop
reductive
tandem
reaction
for
general
AHBA
derivatives
from
cheap
abundant
nitroarenes,
formaldehyde,
acrylates.
This
catalytic
three-component
features
broad
substrate
functionality
tolerance,
an
easily
accessible
reusable
catalyst,
high
step
atom
economy.
The
active
Co
sites
are
involved
mild
reduction
processes
with
formic
acid,
whereas
carbon
support
enriches
HCHO
acrylates
physical
adsorption,
thus
favoring
capture
hydroxylamine
nitrone
intermediates
via
condensation
1,3-dipolar
cycloaddition,
respectively.
Such
metal–support
synergy
interrupts
conventional
nitroarenes
into
anilines
results
novel
route.
In
this
work,
concept
merging
effective
intermediate
transformations
is
anticipated
more
useful
reactions
rational
design.
Chemistry - A European Journal,
Год журнала:
2023,
Номер
30(7)
Опубликована: Ноя. 13, 2023
Abstract
Thiourea
derivatives
are
in‐demand
motifs
in
organic
synthesis,
medicinal
chemistry
and
material
science,
yet
redox
methods
for
the
synthesis
that
start
from
safe,
simple,
inexpensive
readily
available
feedstocks
scarce.
In
this
article,
we
disclose
of
these
using
elemental
sulfur
nitromethane
as
starting
materials.
The
method
harnesses
multi‐electron
auto‐redox
property
presence
amines,
delivering
thiourea
products
without
any
added
oxidant
or
reductant.
Extension
reaction
to
cyclizable
amines
and/or
higher
homologues
led
a
wide
range
nitrogen
heterocycles
thioamides.
Operationally
reactions
scalable,
tolerate
functional
groups,
can
be
employed
direct
functionalization
natural
products.
Mechanistically,
nitro
group
was
found
act
an
leaving
group,
being
reduced
ammonia
whereas
sulfur,
along
with
role
building
block
thiocarbonyl
behaved
complementary
reductant,
oxidized
sulfate.
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(24)
Опубликована: Янв. 29, 2024
Abstract
The
in‐depth
study
on
reduction–specified
coupling
reactions
of
the
nitroarenes
by
heterogeneous
cobalt
catalysis
opens
a
door
for
diversified
syntheses
functional
N‐containing
molecules.
Guided
structure–function
relationship
materials,
rational
design
nano–catalysts
can
effectively
regulate
routes
organic
reactions.
Precise
transformation
intermediates
generated
during
nitroarene
reduction
with
suitable
nano–catalyst
is
promising
way
to
develop
new
tandem
reactions,
and
synthesize
structurally
novel
compounds
that
are
difficult
access
conventional
approaches.
Chemical Communications,
Год журнала:
2024,
Номер
60(67), С. 8806 - 8823
Опубликована: Янв. 1, 2024
Distinct
reactivity
and
chemoselectives
of
photoexcited
nitroarenes
under
visible
light
irradiation
such
as
reductive
C–N
coupling,
anaerobic
oxidation,
annulation,
scaffold
diversification
via
nitrene
insertion,
etc.
,
are
highlighted.
