Beilstein Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
19, P. 1881 - 1894
Published: Dec. 12, 2023
Anion–π
catalysis,
introduced
in
2013,
stands
for
the
stabilization
of
anionic
transition
states
on
π-acidic
aromatic
surfaces.
catalysis
carbon
allotropes
is
particularly
attractive
because
high
polarizability
promises
access
to
really
strong
anion–π
interactions.
With
these
expectations,
fullerenes
has
been
2017,
followed
by
nanotubes
2019.
Consistent
with
expectations
from
theory,
generally
increases
polarizability.
Realized
examples
reach
enolate
addition
chemistry
asymmetric
Diels–Alder
reactions
and
autocatalytic
ether
cyclizations.
Currently,
gains
momentum
combination
electric-field-assisted
transformative
impact
organic
synthesis.
Chemical Reviews,
Journal Year:
2021,
Volume and Issue:
121(21), P. 13620 - 13697
Published: Oct. 13, 2021
Supported
single-metal
atom
catalysts
(SACs)
are
constituted
of
isolated
active
metal
centers,
which
heterogenized
on
inert
supports
such
as
graphene,
porous
carbon,
and
oxides.
Their
thermal
stability,
electronic
properties,
catalytic
activities
can
be
controlled
via
interactions
between
the
center
neighboring
heteroatoms
nitrogen,
oxygen,
sulfur.
Due
to
atomic
dispersion
amount
required
for
catalysis
decreased,
thus
offering
new
possibilities
control
selectivity
a
given
transformation
well
improve
catalyst
turnover
frequencies
numbers.
This
review
aims
comprehensively
summarize
synthesis
Fe-SACs
with
focus
anchoring
single
atoms
(SA)
carbon/graphene
supports.
The
characterization
these
advanced
materials
using
various
spectroscopic
techniques
their
applications
in
diverse
research
areas
described.
When
applicable,
mechanistic
investigations
conducted
understand
specific
behavior
Fe-SACs-based
highlighted,
including
use
theoretical
models.
Journal of Materials Chemistry A,
Journal Year:
2021,
Volume and Issue:
9(35), P. 19489 - 19507
Published: Jan. 1, 2021
Single-atom
and
double-atom
catalysts
have
emerged
as
a
new
Frontier
in
many
fields
due
to
their
high
atom-utilization
efficiency,
excellent
catalytic
properties
good
durability.
Organic Letters,
Journal Year:
2023,
Volume and Issue:
25(12), P. 2139 - 2144
Published: March 22, 2023
The
three-component
reactions
of
enaminones,
α-diazo
esters/ketones,
and
t-butyl
nitrite
(TBN)
for
the
switchable
synthesis
isomeric
isoxazoles
have
been
realized.
catalysis
with
Cu(II)
salt
provides
3,4-disubsituted
via
[3
+
2]
cycloaddition.
On
other
hand,
Ag(I)
identical
substrates
leads
to
reversed
C3
C4
substitution
based
on
a
key
[2
1]
Molecules,
Journal Year:
2024,
Volume and Issue:
29(13), P. 3177 - 3177
Published: July 3, 2024
Iron
(Fe)
is
considered
to
be
one
of
the
most
significant
elements
due
its
wide
applications.
Recent
years
have
witnessed
a
burgeoning
interest
in
Fe
catalysis
as
sustainable
and
cost-effective
alternative
noble
metal
organic
synthesis.
The
abundance
low
toxicity
Fe,
coupled
with
competitive
reactivity
selectivity,
underscore
appeal
for
A
lot
catalytic
reactions
been
performed
using
heterogeneous
catalysts
oxide
hybridized
support
systems
like
aluminosilicates,
clays,
carbonized
materials,
oxides
or
polymeric
matrices.
This
review
provides
comprehensive
overview
latest
advancements
Fe-catalyzed
transformation
reactions.
Highlighted
areas
include
cross-coupling
reactions,
C-H
activation,
asymmetric
catalysis,
cascade
processes,
showcasing
versatility
across
spectrum
synthetic
methodologies.
Emphasis
placed
on
mechanistic
insights,
elucidating
underlying
principles
governing
iron-catalyzed
Challenges
opportunities
field
are
discussed,
providing
roadmap
future
research
endeavors.
Overall,
this
illuminates
transformative
potential
driving
innovation
sustainability
chemistry,
implications
drug
discovery,
materials
science,
beyond.
Materials Reports Energy,
Journal Year:
2023,
Volume and Issue:
3(2), P. 100197 - 100197
Published: May 1, 2023
Electrochemical
carbon
dioxide
reduction
reaction
(CO2RR)
provides
an
attractive
approach
to
capture
and
utilization
for
the
production
high-value-added
products.
However,
CO2RR
still
suffers
from
poor
selectivity
low
current
density
due
its
sluggish
kinetics
multitudinous
pathways.
Single-atom
catalysts
(SACs)
demonstrate
outstanding
activity,
excellent
selectivity,
remarkable
atom
efficiency,
which
give
impetus
search
electrocatalytic
processes
aiming
at
high
selectivity.
There
appears
significant
activity
in
development
of
efficient
SACs
CO2RR,
while
atomic
sites
remains
a
considerable
barrier
be
overcome.
To
construct
high-metal-loading
SACs,
aggregation
must
prevented,
thus
novel
strategies
are
required.
The
key
creating
high-density
atomically
dispersed
is
designing
enough
anchoring
sites,
normally
defects,
stabilize
highly
mobile
separated
metal
atoms.
In
this
review,
we
summarized
advances
developing
high-loading
through
defect
engineering,
with
focus
on
synthesis
achieve
site
loading.
Finally,
future
opportunities
challenges
area
single-atom
electrocatalysts
also
discussed.
Science Advances,
Journal Year:
2023,
Volume and Issue:
9(41)
Published: Oct. 12, 2023
The
vision
to
control
the
charges
migrating
during
reactions
with
external
electric
fields
is
attractive
because
of
promise
general
catalysis,
emergent
properties,
and
programmable
devices.
Here,
we
explore
this
idea
anion-π
that
stabilization
anionic
transition
states
on
aromatic
surfaces.
Catalyst
activation
by
polarization
system
most
effective.
This
induced
fields.
use
electrochemical
microfluidic
reactors
polarize
multiwalled
carbon
nanotubes
as
catalysts
emerges
essential.
These
provide
access
high
at
low
enough
voltage
prevent
electron
transfer,
afford
meaningful
effective
catalyst/substrate
ratios,
avoid
interference
from
additional
electrolytes.
Under
these
conditions,
rate
pyrene-interfaced
epoxide-opening
ether
cyclizations
linearly
voltage-dependent
positive
voltages
negligible
negative
voltages.
While
electromicrofluidics
have
been
conceived
for
redox
chemistry,
our
results
indicate
their
supramolecular
organocatalysis
has
potential
noncovalently
electrify
organic
synthesis
in
broadest
sense.
ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(6), P. 7949 - 7961
Published: Feb. 8, 2022
Cascade
reactions
take
advantage
of
step-saving
and
facile
operation
for
obtaining
chemicals.
Herein,
catalytic
hydrogenation
nitroarene
coupled
condensation
with
β-diketone
to
afford
β-ketoenamines
is
achieved
by
an
integrated
nanocatalyst,
Pd-e@UiO-66.
The
catalyst
has
the
structure
acid-rich
metal-organic
framework
(MOF),
UiO-66-encapsulated
electron-rich
Pd
nanoparticles,
it
reconciles
electron-effect
contradiction
cascade
reactions:
requires
catalyst,
while
electron-deficient
Lewis
acid
sites.
showed
good
activity,
high
chemoselectivity,
universal
applicability
synthesis
using
nitroarenes.
More
than
30
have
been
successfully
prepared
up
99%
yield
via
methodology
relay
catalysis.
exhibited
excellent
stability
maintain
its
performance
more
five
cycles.
Furthermore,
we
conducted
in-depth
exploration
reaction
mechanism
theoretical
calculations.
