N-Phenylphenothiazine-based Hyper-cross-linked Polymers for Recyclable, Heterogeneous Photocatalysis of Organic Transformations: A Strategy to Access 6-Difluoromethyl-phenanthridines
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Herein,
a
N-phenylphenothiazine-based
hyper-cross-linked
polymer
(PTH-HCP)
was
finely
designed
and
constructed,
which
serves
as
metal-free
heterogeneous
photocatalyst
for
organic
transformations.
Characterization
experiments
have
shown
that
this
demonstrates
outstanding
stability,
extensive
surface
area,
exceptional
photoelectric
response
properties.
Moreover,
PTH-HCP
showed
good
catalytic
efficiency
recyclability
in
the
photochemically
driven
difluoromethylation/cyclization
reactions.
This
work
provides
strategy
design
construction
of
photocatalysts
offers
support
their
broad
prospects
synthetic
applications.
Язык: Английский
Rose‐Bengal‐Photocatalyzed Cross‐Dehydrogenative Coupling Reactions under Visible Light
European Journal of Organic Chemistry,
Год журнала:
2024,
Номер
27(8)
Опубликована: Янв. 19, 2024
Abstract
Over
the
past
few
years,
organic
chemistry
has
used
dye
rose
bengal‘s
ability
to
absorb
visible
light.
In
present‐day
research,
innovation
of
environmentally
friendly
processes
for
carbon‐carbon/carbon‐heteroatoms
(Nitrogen,
Oxygen,
Sulphur,
and
Phosphorus)
bond
formation
great
importance.
The
photocatalyzed
cross‐dehydrogenative
coupling
(CDC)
reactions
using
bengal
(RB)
is
a
promising
technique
creating
carbon‐carbon/carbon‐heteroatom
bonds
directly
from
readily
available
compounds.
Our
review
focuses
on
current
advancement
in
that
uses
bond‐making
synthesize
various
important
molecules
via
CDC
reactions.
Язык: Английский
Rose bengal photocatalyzed expeditious multicomponent synthesis of 3,4‐dihydropyrimidin‐2‐(1H)‐ones/thiones under visible light irradiation
Journal of Heterocyclic Chemistry,
Год журнала:
2024,
Номер
61(9), С. 1455 - 1461
Опубликована: Июль 10, 2024
Abstract
The
combination
of
visible
light,
a
renewable
and
green
energy
source,
rose
bengal,
non‐toxic
organic
dye
as
photoredox
catalyst,
is
an
easy
efficient
method
for
synthesizing
3,4‐dihydropyrimidin‐2(1
H
)‐ones/thiones
in
EtOH
at
ambient
temperature
very
short
reaction
time.
present
work
offers
simple
operation,
workup,
rapid
conversion,
excellent
product
yields,
while
accommodating
wide
range
substrates.
Rose
bengal‐based
photocatalytic
approach
permits
foremost
sustainability,
which
delivers
economic
environmental
rewards.
Язык: Английский
Photo- and electro-induced perfluoroalkylation/cyclization of o-hydroxyaryl enaminones: Synthesis of perfluoroalkyl chromones
Green Synthesis and Catalysis,
Год журнала:
2024,
Номер
unknown
Опубликована: Март 1, 2024
A
practical,
metal-,
and
additive-free
strategy
for
photo-
electro-induced
perfluoroalkylation/cyclization
of
o-hydroxyaryl
enaminones
with
sodium
perfluoroalkanesulfinates
under
mild
conditions
has
been
developed.
Various
fluoroalkyl
chromones
were
efficiently
assembled
in
moderate
to
good
yields.
The
scalability
this
protocol
the
assembling
diverse
nitrogen-containing
heterocycles
from
late-stage
transformations
greatly
broaden
practical
applications
developed
protocol.
Язык: Английский
Acid‐Promoted Self‐Photocatalyzed Regioselective Oxidation: A Novel Strategy for Accessing Quinoxaline‐2,3‐diones
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(68)
Опубликована: Авг. 29, 2024
Abstract
Disclosed
here
is
an
efficient
approach
for
the
preparation
of
quinoxaline‐2,3‐diones
using
air
(O
2
)
as
a
green
oxidant
via
acid‐promoted
self‐photocatalyzed
regioselective
oxidation
quinoxalin‐2(1
H
)‐ones
at
C‐3
position.
This
protocol
presents
novel
synthetic
route
quinoxaline‐2,3‐dione
derivatives,
featuring
mild
reaction
conditions,
simple
operation,
and
wide
range
substrates,
without
need
external
photocatalysts,
metal
reagents,
strong
oxidants.
Язык: Английский