Visible Light-Driven Quantum Dot and Copper Photocatalysis for Room Temperature Azide–Alkyne Cycloaddition
ACS Applied Nano Materials,
Год журнала:
2025,
Номер
8(4), С. 1700 - 1708
Опубликована: Янв. 15, 2025
Advancing
efficient
and
sustainable
catalytic
systems
for
organic
transformation
remains
a
pivotal
objective
in
contemporary
chemistry.
This
research
introduces
an
innovative
method
employing
visible
light-driven
quantum
dots
copper
photocatalysis
to
achieve
azide–alkyne
cycloaddition
(AAC)
reactions
at
room
temperature.
The
synergistic
action
of
(QDs)
catalysts
under
light
exposure
ensures
high
reaction
efficiency
regio-selectivity,
offering
ecofriendly
energy-saving
alternative
conventional
thermal
approaches.
In
this
study,
CdS
QDs
play
dual
role:
they
act
as
electron
donors,
reducing
Cu(II)
Cu(I),
enable
rapid
completion
light,
even
without
inert
atmosphere
or
any
sacrificial
donor.
use
immiscible
solvents
allows
easy
separation,
exhibit
impressive
properties.
demonstrates
turnover
number
(TON)
0.96
×
106
frequency
(TOF)
0.16
h–1.
Furthermore,
work
showcases
broad
substrate
compatibility,
tolerating
various
functional
groups
achieving
excellent
yields
up
99%
shorter
time
6
h,
thus
establishing
it
versatile
strategy
synthesizing
1,2,3-triazoles.
study
underscores
the
potential
merging
QD
with
metal
catalysis
promote
advancement
chemical
processes.
Язык: Английский
Electrooxidation-induced arylsulfonylation of xanthene derivatives with DABSO as an SO2 surrogate
Organic & Biomolecular Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
An
electrochemical
redox
C(sp3)-H
arylsulfonylation
of
xanthenes
has
been
developed
using
aryl
diazonium
tetrafluoroborates
and
DABSO
as
the
arylsulfone
source.
This
radical
reaction
proceeds
via
formation
arylsulfonyl
radicals
from
between
DABSO,
followed
by
a
cross-coupling
process.
Notably,
occurs
in
absence
any
catalyst
or
external
oxidant,
providing
efficient
sulfonylation
with
broad
functional
group
compatibility.
Язык: Английский
Thiolated Molybdenum diselenide Quantum Dots as a Bifunctional Catalyst towards the Synthesis of Benzimidazoles
Nanoscale,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Functionalized
transition
metal
dichalcogenides
(TMDs)
have
garnered
significant
attention
over
the
past
decade
in
various
applications,
but
they
seldom
been
explored
catalytic
transformations.
Driven
by
motivation
to
explore
scope
of
functionalized
TMDs
catalysis,
one-pot
synthesis
benzimidazoles
was
considered
as
model
reaction.
Heterocyclic
compounds
such
are
categorised
pharmaceutically
relevant
structures
and
always
demand
development
improvised
synthetic
strategies.
In
this
regard,
we
developed
a
method
using
lower
dimension,
catalytically
active,
thiol-functionalized
MoSe2
quantum
dots
(QDs).
Mechanistic
investigations
revealed
utility
surface
functionalization
enhancing
stability
photocatalytic
properties
inducing
lattice
distortion.
The
nanomaterial
acts
bifunctional
system
serving
photocatalyst
generate
imine
and,
Lewis
acid
facilitate
cyclization.
protocol
could
be
generalised
for
diverse
range
substrates,
further
extended
towards
generation
benzoxazole.
Moreover,
some
synthesised
derivatives
were
found
exhibit
antibacterial
against
Staphylococcus
aureus.
Our
highlights
surface-modified
lower-dimensional
nanomaterials
sustainable
dynamic
alternatives
photocatalysis
'library'
lead
molecules
economical
benign
protocols.
Язык: Английский