Advanced Synthesis & Catalysis,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 5, 2024
Abstract
We
present
a
novel
and
highly
efficient
method
for
synthesizing
polyfunctionalized
1,2,4‐triazoles.
This
approach
leverages
visible
light
arylazo
sulfones
in
combination
with
N
‐vinyl
amides,
the
environmentally
friendly
solvent
ethyl
acetate.
Remarkably,
reaction
proceeds
without
need
(photo)catalysts,
ensuring
near‐perfect
atom
economy
producing
only
water
as
by‐product.
exhibits
excellent
functional
group
tolerance
can
be
scaled
both
batch
continuous‐flow
processes.
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(17), С. 4882 - 4894
Опубликована: Янв. 1, 2024
This
review
focuses
on
the
synthesis
of
C–P
bonds
using
carbon-centered
radicals
with
phosphorous
compounds
different
valence
states
(P
III
,
P
V
4
)
under
photocatalysis.
The Journal of Organic Chemistry,
Год журнала:
2025,
Номер
90(2), С. 1078 - 1084
Опубликована: Янв. 7, 2025
We
disclosed
a
new
strategy
for
the
synthesis
of
1,2-amino
alcohols
enabled
by
visible
light
without
requirement
photocatalyst
and
metal.
Under
irradiation
at
400
nm,
reaction
carbonyl
derivatives
N-arylamines
proceeds
via
an
electron-donor-acceptor
(EDA)
intermediate,
obtaining
diverse
vicinal
amino
decorated
with
two-electron-rich/-deficient
aryl
group.
Abstract
A
general
protocol
for
the
photorearrangement
of
substituted
benzo‐
and
naphthoquinones
using
monochromatic
blue
light
irradiation
in
solution
was
developed.
During
this
process,
quinone
ring
is
transformed
into
hydroquinone,
while
substituent
undergoes
desaturation
or
annulation
onto
proximal
oxygen
formed
hydroquinone.
We
found
that
preferred
acyclic
saturated
substituents,
such
as
alkyl
groups,
tendency
observed
both
cyclic
unsaturated
substituents
(allyl,
alkenyl,
aryl).
The
diversity
participating
functional
group
tolerance
transformation
allowed
us
to
prepare
10
natural
phenolic
compounds,
suggesting
visible
may
likewise
induce
their
formation
from
respective
quinones
sources.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 23, 2025
Deuterated
compounds
used
in
drug
discovery
and
live-cell
imaging
have
recently
gained
the
attention
of
various
scientific
fields.
Although
hydrogen-deuterium
(H/D)
exchange
reactions
are
straightforward
deuteration
methods,
achieving
perfect
chemoselectivity
is
challenging.
We
report
highly
chemoselective
α-thio
C(sp3)-H
bonds
using
a
thioxanthone
or
anthraquinone
organic
photocatalyst
bearing
an
aromatic
ketone
skeleton
D2O
as
inexpensive
deuterium
source
under
390
nm
irradiation.
Notably,
incorporation
at
α-positions
O/N
atoms,
benzylic
positions,
rings
was
not
observed.
The
present
accomplished
via
single
electron
transfer
mechanism
between
S-containing
substrates,
proven
by
laser-induced
time-resolved
transient
absorption
spectroscopic
measurements.
Furthermore,
proposed
method
could
be
applied
to
including
pharmaceuticals
biologically
active
with
high
regioselectivities.
available
deuterated
novel
alkylation
reagents
for
future
materials
Raman
were
also
demonstrated.
The Journal of Organic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 30, 2025
The
effect
of
water
on
visible-light-driven
generation
aryl
radicals
or
cations
from
colored
shelf-stable
arylazo
sulfonates
has
been
investigated.
Photoinduced
ionic
and
radical
decomposition
these
salts
compete,
depending
the
media
used.
In
organic
solvents,
light-induced
homolysis
N-S
bond
occurs,
resulting
may
be
used
to
some
extent
for
arylation
reactions.
On
contrary,
in
neat
water,
chemistry
is
prevented
by
an
efficient
photoheterolysis,
a
reactive
cation
otherwise
generated.
Bulletin of the Korean Chemical Society,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 9, 2024
Abstract
Photoredox
catalysis
has
attracted
increasing
attention
because
of
wide
range
synthetic
transformations
and
solar
energy
conversion
applications.
Reviews
on
photoredox
have
so
far
focused
predominantly
the
This
review
highlights
how
organic
catalysts
were
developed
they
function
as
efficient
photocatalysts
in
mechanistic
point
views.
In
particular,
9‐mesityl‐10‐methylactidinium
(Acr
+
–Mes)
been
highlighted
one
best
catalysts.
Acr
–Mes
was
originally
a
model
compound
photosynthetic
reaction
center
to
mimic
long
lifetime
charge‐separated
state
which
is
converted
chemical
photosynthesis.
The
reason
why
acts
most
catalyst
clarified
terms
one‐electron
redox
potentials
lifetimes
electron‐transfer
•
•+
)
produced
upon
photoexcitation
different
solvents.
mesityl
substituent
at
9‐position
moiety
essential
for
discussed
comparison
with
acridinium
ions
substituents
R
–R)
including
10‐methylacridinium
ion
no
(AcrH
).
mechanisms
are
various
reactions
mimicking
quinolinium
its
derivatives
also
that
–Mes.
Finally,
immobilization
form
composite
improve
catalytic
activity
stability.
Green Chemistry,
Год журнала:
2024,
Номер
26(18), С. 9833 - 9839
Опубликована: Янв. 1, 2024
Herein,
we
introduce
a
visible-light
promoted
green,
metal-free
method
for
the
regioselective
nucleophilic
ring
opening
of
epoxides
by
exploiting
arylazo
sulfones
as
PhotoAcid
Generators
(PAGs).
