Advanced Synthesis & Catalysis,
Journal Year:
2024,
Volume and Issue:
366(11), P. 2527 - 2533
Published: Feb. 26, 2024
Abstract
An
array
of
cyanopyridazine
derivatives
have
been
developed
through
a
sequence
(3+3)
cycloaddition/oxidative
aromatization/derivatization
steps.
Investigation
the
physicochemical
properties
these
compounds
shows
that
four
interesting
fluorescence
and
potential
to
be
into
bimodal
photoredox
catalysts.
One
has
confirmed
an
catalyst
in
reactions
N
‐aryl‐
tetrahydroisoquinolines
with
phosphite,
nitromethane,
malonitrile
sodium
thiocyanate,
led
22%–95%
yields.
The
capabilities
remain
recyclable
using
under
reaction
conditions.
ChemPhotoChem,
Journal Year:
2023,
Volume and Issue:
7(6)
Published: Feb. 27, 2023
Abstract
Organic
photoredox
catalysis
is
a
versatile
tool
for
accessing
wide
range
of
synthetic
transformations.
Towards
the
development
new
class
organophotoredox
catalysts,
we
have
employed
phenalenyl,
an
odd
alternant
hydrocarbon
(OAH),
reductive
C−C
coupling
reactions.
Phenalenyl
can
adopt
stable
open‐shell
state
(radical),
using
its
non‐bonding
molecular
orbital.
To
date,
chemically
induced
phenalenyl‐based
radicals
been
extensively
explored
in
designing
various
intriguing
organic
materials
and
recently
towards
electron
transfer
catalysis.
However,
photochemical
generation
rare.
In
this
work,
report
photoinduced
with
detailed
mechanistic
studies
such
as
steady‐state
absorption,
time‐resolved
transient
absorption
spectroscopy,
in‐situ
kinetic
experiments
to
authenticate
photo‐induced
phenalenyl
radicals.
addition,
present
results
demonstrating
that
novel
catalytic
species
be
applied
pinacol
alkylation
terminal
alkynes.
The Chemical Record,
Journal Year:
2023,
Volume and Issue:
23(7)
Published: Jan. 10, 2023
Abstract
Organic
dyes
have
been
actively
studied
as
useful
photocatalysts
because
they
allow
access
to
versatile
structural
flexibility
and
green
synthetic
applications.
The
identification
of
a
new
class
robust
organic
chromophores
is,
therefore,
in
high
demand
increase
diversity
variability.
Although
coumarins
quinolinones
long
acknowledged
chromophores,
their
ability
participate
photoinduced
transformations
is
somewhat
less
familiar.
Fascinated
by
chromophoric
features
adaptable
platform,
our
group
interested
the
fluorescent
bioactive
molecules
development
methods
using
photocatalysts.
This
account
provides
an
overview
recent
progress
discovery
application
light‐absorbing
coumarin
quinolinone
derivatives
photochemistry
medicinal
chemistry.
Chemistry - A European Journal,
Journal Year:
2023,
Volume and Issue:
29(22)
Published: Jan. 26, 2023
A
series
of
new
organic
donor-π-acceptor
dyes
incorporating
a
diquat
moiety
as
novel
electron-acceptor
unit
have
been
synthesized
and
characterized.
The
analytical
data
were
supported
by
DFT
calculations.
These
explored
in
the
aerobic
thiocyanation
indoles
pyrroles.
Here
they
showed
high
photocatalytic
activity
under
visible
light,
giving
isolated
yields
up
to
97
%.
In
addition,
standalone
methyl
viologen
through
formation
an
electron
donor
acceptor
complex
is
presented.
Asian Journal of Organic Chemistry,
Journal Year:
2021,
Volume and Issue:
10(5), P. 1012 - 1023
Published: March 26, 2021
Abstract
Organic
photocatalysis
has
garnered
significant
interest
in
the
field
of
photochemistry
because
its
ability
to
generate
active
radical
species
under
mild
conditions
via
energy
or
electron
transfer
from
excited
state
photosensitizers
organic
molecules.
Quinolinones
and
coumarins
are
privileged
scaffolds
that
widely
distributed
natural
products
pharmaceutical
agents.
Recently,
quinolinones
have
emerged
as
promising
for
a
variety
chemical
transformations.
Significant
advances
development
synthetic
methods
elucidated
their
essential
electronic
properties,
leading
highly
site‐selective
methods.
This
mini‐review
highlights
recent
innovative
approaches
C−H
bond
functionalization
catalyzed
by
light‐absorbing
quinolinone
coumarin
scaffolds.
Advanced Synthesis & Catalysis,
Journal Year:
2024,
Volume and Issue:
366(11), P. 2527 - 2533
Published: Feb. 26, 2024
Abstract
An
array
of
cyanopyridazine
derivatives
have
been
developed
through
a
sequence
(3+3)
cycloaddition/oxidative
aromatization/derivatization
steps.
Investigation
the
physicochemical
properties
these
compounds
shows
that
four
interesting
fluorescence
and
potential
to
be
into
bimodal
photoredox
catalysts.
One
has
confirmed
an
catalyst
in
reactions
N
‐aryl‐
tetrahydroisoquinolines
with
phosphite,
nitromethane,
malonitrile
sodium
thiocyanate,
led
22%–95%
yields.
The
capabilities
remain
recyclable
using
under
reaction
conditions.
