Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(25), P. 11554 - 11565
Published: May 30, 2024
Efficient
and
multiple
CO2
utilization
into
high-value-added
chemicals
holds
significant
importance
in
carbon
neutrality
industry
production.
However,
most
catalysis
systems
generally
exhibit
only
one
type
of
transformation
with
the
efficiency
to
be
improved.
The
restricted
abundance
active
catalytic
sites
or
an
inefficient
rate
these
results
constraint.
Consequently,
we
designed
constructed
two
metal
hydrogen-bonded
organic
frameworks
(M-HOFs)
{[M3(L3–)2(H2O)10]·2H2O}n
(M
=
Co
(1),
Ni
(2);
L
1-(4-carboxyphenyl)-1H-pyrazole-3,5-dicarboxylic
acid)
this
research.
1
2
are
well-characterized,
both
show
excellent
stability.
networks
connected
by
hydrogen
bonds
enhance
structural
flexibility
create
accessible
Lewis
acidic
sites,
promoting
interactions
between
substrates
centers.
This
enhancement
facilitates
efficient
for
types
transformations,
encompassing
cycloaddition
reactions
epoxides
aziridines
afford
cyclic
carbonates
oxazolidinones.
activities
(TON/TOF)
superior
compared
those
other
catalysts.
These
heterogeneous
catalysts
still
exhibited
high
performance
after
being
reused
several
times.
Mechanistic
studies
indicated
intense
substrates,
demonstrating
reason
catalysis.
marks
first
instance
on
M-HOFs
efficiently
catalyzing
conversions,
finding
important
significance
catalyst
design
utilization.
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(10)
Published: Feb. 8, 2024
Abstract
The
design
of
molecular
scaffolds
bearing
multiple
functional
groups
for
the
activation
and
ring‐opening
epoxides
is
a
crucial
challenge
synthesis
efficient
homogeneous
heterogeneous
catalysts
that
are
used
cycloaddition
reaction
CO
2
to
epoxides.
Traditional
approaches
prepare
such
multifunctional
often
imply
multistep
synthetic
procedures
expensive
building
blocks.
In
this
work
we
show
bifunctional
Lewis
acid
metal
quaternary
ammonium
halide
group
can
be
prepared
in
just
two
steps
starting
from
an
opportunely
designed
epoxide
precursor
by
using
inexpensive
substrates.
Such
readily
accessible
catalyst
was
applied
series
under
atmospheric
conditions
generally
leading
quantitative
substrate
conversion
high
carbonate
selectivities.
Importantly,
also
epoxide‐driven
concept
developed
preparation
catalyst,
could
recyclable
systems
target
reaction.
New Journal of Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
A
cobalt
complex
with
a
tetradentate
aminopyridine
ligand
catalyzes
the
cycloaddition
reactions
of
CO
2
and
epoxides,
constituting
single-component,
efficient
solvent-free
system.
Chinese Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
42(6), P. 652 - 685
Published: Nov. 7, 2023
Comprehensive
Summary
Polyhydroxyurethanes
(PHUs)
have
received
considerable
attention
in
the
last
decade
as
potential
alternatives
to
traditional
phosgene‐based
polyurethanes
(PUs).
The
development
of
suitable
5CC
(five
membered‐ring
cyclic
carbonate)
precursors
bearing
multiple
carbonate
moieties
(multi‐5CCs)
is
a
key
requisite
for
preparing
PHUs
by
polyaddition
reaction
with
bis‐
or
polyamines.
Producing
sustainable
from
CO
2
‐based
five‐membered
carbonates
(5CCs)
obtained
biobased
epoxides
valuable
strategy
bridge
utilization
and
upcycling
renewable
substrates.
In
this
context,
while
many
multi‐5CC
monomers
reported
literature
are
oil‐based,
recent
efforts
led
large
variety
multifunctional
5CCs
that
produced
combination
resources
such
fatty
acids
vegetable
oils,
lignin,
terpenes,
sugars.
work,
crucial
advances
(2019—2023)
on
prepared
multi‐5CCs
(partially/potentially)
substrates
reviewed
respect
their
synthesis,
thermal
mechanical
properties,
recent,
emerging
applications.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(10), P. 2307 - 2307
Published: May 14, 2024
The
cycloaddition
of
CO2
to
epoxides
afford
versatile
and
useful
cyclic
carbonate
compounds
is
a
highly
investigated
method
for
the
nonreductive
upcycling
CO2.
One
main
focuses
current
research
in
this
area
discovery
readily
available,
sustainable,
inexpensive
catalysts,
catalytic
methodologies
that
allow
their
seamless
solvent-free
recycling.
Water,
often
regarded
as
an
undesirable
pollutant
process,
progressively
emerging
helpful
reaction
component.
On
one
hand,
it
serves
hydrogen
bond
donor
(HBD)
enhance
performance
ionic
compounds;
on
other
aqueous
media
development
diverse
protocols
can
boost
or
ease
recycling
molecular
catalysts.
An
overview
advances
use
biphasic
systems
provided
work
along
with
recommendations
possible
future
developments.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(27), P. 10221 - 10228
Published: June 24, 2024
Transforming
gaseous
waste
CO2
as
a
C1
feedstock
into
fine
chemicals
is
significant
for
green
chemistry
and
sustainable
development.
Herein,
the
novel
Ag(I)-functionalized
polyoxoniobate-based
coordination
polymer
{[Ag(tpy)]5[Nb10O28]}[Ag(H2O)]·5H2O
(1,
tpy
=
2,2′:6′,2″-terpyridine)
successfully
fabricated
fully
characterized.
Compound
1
not
only
displays
excellent
thermal
solvent
stabilities
but
can
also
efficiently
selectively
catalyze
solvent-free
carboxylative
cyclization
of
terminal
propargylic
alcohols
with
different
substituents
to
high-value-added
α-alkylidene
cyclic
carbonates
at
room
temperature.
The
prominent
performance
attributed
synergistic
operation
Ag(I)
[Nb10O28]
in
its
structure,
which
responsible
activating
C≡C
bond
hydroxyl
group
alcohols,
respectively.
catalyst
exhibits
outstanding
sustainability;
no
obvious
decrease
catalytic
activity
observed
during
five
successive
cycles,
yield
carbonate
gram-scale
(100
mmol,
8.4
g)
experiment
up
61.7%
(turnover
number
value
5144).
To
best
our
knowledge,
this
represents
first
example
polyoxometalate-based
catalyzing
conversion
value-added
