Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(40)
Published: Aug. 1, 2022
Abstract
Herein,
cobaloxime
is
used
for
the
first
time
as
a
catalyst
synthesis
of
phosphorylated
heteroaromatics,
which
an
intriguing
and
versatile
functional
motif.
With
visible‐light
irradiation,
not
only
oxidizes
phosphine
oxides
to
form
phosphorus
radicals
(P‐radicals)
subsequent
reaction
with
radical
acceptor
isocyanides
or
but
also
combines
intermediate
β
‐H
elimination,
thereby
producing
heteroaromatics
H
2
CH
4
byproduct.
Phosphine
dialkyl,
alkylaryl,
diaryl
substituents
could
be
directly
transformed
into
phenanthridines,
benzothiazoles,
isoquinolines,
common
heteroaromatics.
This
catalytic
system
features
extremely
mild
conditions,
broad
substrate
scope
good
excellent
yields.
Scale‐up
sunlight
show
great
application
potential
in
green
important
organophosphorus
chemicals.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
50(1), P. 120 - 242
Published: Dec. 7, 2020
Covalent
organic
frameworks
offer
a
molecular
platform
for
integrating
units
into
periodically
ordered
yet
extended
2D
and
3D
polymers
to
create
topologically
well-defined
polygonal
lattices
built-in
discrete
micropores
and/or
mesopores.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
50(3), P. 1813 - 1845
Published: Dec. 17, 2020
Covalent
organic
frameworks
(COFs)
are
crystalline
porous
materials
constructed
from
molecular
building
blocks
using
diverse
linkage
chemistries.
Their
modular
construction
system
allows
not
only
for
tailor-made
design
but
also
an
immense
variety
of
blocks,
opening
the
door
to
numerous
different
functionalities
and
potential
applications.
As
a
consequence,
large
number
that
can
act
as
light-harvesters,
semiconductors,
ligands,
binding
sites
or
redox
centers
have
recently
been
integrated
into
scaffolds
COFs.
This
unique
combination
reticular
chemistry
with
control
intrinsic
properties
paves
way
towards
new
semiconducting
(opto-)electronic
applications
such
sensors,
photocatalysts
-electrodes,
supercapacitor
battery
materials,
solar-harvesting
devices
light
emitting
diodes.
With
developments
regarding
motif,
highly
stable
still
tunable
COFs
developed
even
under
harsh
conditions.
Further,
stacking
modes
distances
in
investigated
powerful
means
optical
electrical
characteristics
these
self-assembled
frameworks.
Advanced
understanding
optoelectronic
processes
has
enabled
their
implementation
promising
real-world
review
highlights
key
concepts
synthesis
electro-
photoactive
well
our
frameworks,
hence
establishing
paradigm
rational
well-defined
novel
devices.
Small,
Journal Year:
2020,
Volume and Issue:
16(24)
Published: May 17, 2020
Abstract
Covalent
organic
frameworks
(COFs),
connecting
different
units
into
one
system
through
covalent
bonds,
are
crystalline
porous
materials
with
2D
or
3D
networks.
Compared
conventional
such
as
inorganic
zeolite,
active
carbon,
and
metal‐organic
frameworks,
COFs
a
new
type
of
well‐designed
pore
structure,
high
surface
area,
outstanding
stability,
easy
functionalization
at
the
molecular
level,
which
have
attracted
extensive
attention
in
various
fields,
energy
storage,
gas
separation,
sensing,
photoluminescence,
proton
conduction,
magnetic
properties,
drug
delivery,
heterogeneous
catalysis.
Herein,
recent
advances
metal‐free
versatile
platform
for
catalysis
wide
range
chemical
reactions
presented
synthetic
strategy
promising
catalytic
applications
COF‐based
catalysts
(including
photocatalysis)
summarized.
According
to
types
reactions,
this
review
is
divided
following
five
parts
discussion:
achiral
catalysis,
chiral
conversion,
photocatalytic
conversion
water
splitting
reduction
carbon
dioxide),
pollutant
degradation.
Furthermore,
remaining
challenges
prospects
also
presented.
ACS Catalysis,
Journal Year:
2020,
Volume and Issue:
10(15), P. 8717 - 8726
Published: July 10, 2020
Covalent
organic
frameworks
(COFs)
are
promising
candidates
as
heterogeneous
photocatalysts
because
of
their
porosity
and
tunable
light
absorption.
The
photostability
charge
separation
COFs
highly
important
to
improve
the
efficiency
photocatalytic
transformation.
In
this
work,
a
fully
conjugated
donor–acceptor
COF
is
constructed
with
benzothiadiazole
unit,
which
exhibits
high
stability
enhanced
separation.
prepared
can
efficaciously
produce
superoxide
radical
anions
under
air
visible
light,
mediate
oxidative
amine
coupling
cyclization
thioamide
1,2,4-thiadiazole
in
moderate
yield
recyclability
(18
examples).
This
study
demonstrates
great
capacity
D–A
structure
for
light-driven
synthesis.
Journal of Materials Chemistry A,
Journal Year:
2020,
Volume and Issue:
8(15), P. 6957 - 6983
Published: Jan. 1, 2020
In
this
review,
a
comprehensive
summary
of
the
potential
photocatalytic
applications
realized
to
date
in
fast-growing
field
COFs
is
provided
with
aim
present
full
blueprint
for
photochemical
energy
conversion
and
reactions.
ChemPhotoChem,
Journal Year:
2020,
Volume and Issue:
4(7), P. 456 - 475
Published: Feb. 21, 2020
Visible
light
photocatalysis
relies
mainly
on
expensive
noble
metal
complexes
and
organic
dyes
that
are
not
recyclable.
Heterogeneous
semiconductors,
which
applied
for
artificial
photosynthesis
wastewater
treatment,
a
promising
sustainable
alternative
gain
increasing
attention.
Inorganic
semiconductors
with
suitable
bandgaps
among
the
most
widely
studied
heterogeneous
photocatalysts
due
to
their
high
stability
recyclability.
More
recently,
microporous
materials,
such
as
conjugated
polymers,
covalent
frameworks,
frameworks
can
be
tuned
designed
molecular
level
showed
results.
This
review
provides
an
overview
of
common
focus
applicability
in
synthesis.
ACS Catalysis,
Journal Year:
2020,
Volume and Issue:
10(12), P. 6664 - 6675
Published: May 19, 2020
Visible-light-responsive
covalent
organic
frameworks
(COFs)
as
photocatalysts
for
metal-free
reactions
are
highly
desirable
due
to
their
structural
controllability
and
molecular
functionality.
In
this
study,
we
describe
the
fabrication
of
an
anthraquinone
functionalized
COF
linked
by
β-ketoenamines
(AQ-COF),
which
presents
a
noodle-like
nanofiber
structure
with
staggered
AB
stacking
mode.
The
as-resultant
AQ-COF
was
efficiently
utilized
heterogeneous
catalyst
selective
aerobic
oxidation
sulfides
under
visible-light
irradiation.
Compared
precedential
AQ-COFDMF
spherical
particles,
proposed
higher
photocatalytic
activity
high
selectivity
sulfoxides
chemical
stability.
Further
characterization
techniques
revealed
that
unique
morphology
can
greatly
enhance
charge
transfer
separation
efficiency
photogenerated
electron–hole
pairs,
thus
giving
rise
improvement
activity.
Organic Chemistry Frontiers,
Journal Year:
2021,
Volume and Issue:
8(6), P. 1345 - 1363
Published: Jan. 1, 2021
This
review
is
devoted
to
highlighting
main
achievements
in
the
development
of
cascade
radical
cyclization
acceptors
for
synthesis
carbo-
and
heterocycles.
