Abstract
Despite
the
rich
photochemistry
of
3d‐metal
complexes,
utilization
excited‐state
reactivity
these
compounds
in
organic
synthesis
has
been
historically
overlooked.
The
advent
photoredox
catalysis
changed
perception
synthetic
chemists
towards
photochemistry,
and
nowadays
potential
photoinduced,
outer‐sphere
single‐electron
transfer
events
is
widely
recognized.
More
recently,
an
emerging
new
mode
photoactivation
taken
spotlight,
based
on
inner‐sphere
triggered
by
population
ligand‐to‐metal
charge‐transfer
(LMCT)
excited
states.
Contrarily
to
photoredox,
LMCT‐activation
does
not
rely
matching
redox
potentials,
offers
unique
profiles
particularly
well
suited
Earth‐abundant
metal
complexes.
Those
appealing
features
are
propelling
development
methods
using
this
blueprint
generate
highly
reactive
open‐shell
species
under
mild
conditions.
aim
contribution
provide
a
didactical
tool
for
comprehension
concept
facilitate
methodologies
achieve
sustainable
chemical
transformations.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(17), С. 9369 - 9388
Опубликована: Апрель 20, 2023
Photoredox
catalysis
of
organic
reactions
driven
by
iron
has
attracted
substantial
attention
throughout
recent
years,
due
to
potential
environmental
and
economic
benefits.
In
this
Perspective,
three
major
strategies
were
identified
that
have
been
employed
date
achieve
reactivities
comparable
the
successful
noble
metal
photoredox
catalysis:
(1)
Direct
replacement
a
center
in
archetypal
polypyridyl
complexes,
resulting
metal-centered
photofunctional
state.
(2)
situ
generation
photoactive
complexes
substrate
coordination
where
are
via
intramolecular
electron
transfer
involving
charge-transfer
states,
for
example,
through
visible-light-induced
homolysis.
(3)
Improving
excited-state
lifetimes
redox
potentials
states
new
ligand
design.
We
seek
give
an
overview
evaluation
developments
rapidly
growing
field
and,
at
same
time,
provide
outlook
on
future
iron-based
catalysis.
Advanced Synthesis & Catalysis,
Год журнала:
2023,
Номер
365(20), С. 3413 - 3431
Опубликована: Сен. 12, 2023
Abstract
Due
their
multifaced
applications,
the
access
to
organosulfur
derivatives
in
an
efficient
and
economical
way
is
a
challenge
organic
synthesis.
In
this
context
photochemistry
photocatalysis
play
crucial
role
development
of
innovative
(and
selective)
Carbon‐Sulphur
bond
formation
processes.
The
present
review
aims
collect
most
recent
strategies
achieve
target
under
visible
light
driven
conditions.
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(18), С. 5278 - 5305
Опубликована: Янв. 1, 2024
This
review
summarizes
the
latest
methodological
advances
in
photocatalytic
C(sp
3
)–H
functionalization,
with
a
particular
emphasis
on
formation
of
C–P,
C–B,
C–S
bonds,
etc
.,
and
some
prominent
efforts
asymmetric
C–H
functionalization.
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(6), С. 4156 - 4164
Опубликована: Март 7, 2024
Metal
impurities
can
complicate
the
identification
of
active
catalyst
species
in
transition
metal
catalysis
and
electrocatalysis,
potentially
leading
to
misleading
findings.
This
study
investigates
influence
on
photocatalysis.
Specifically,
photocatalytic
reaction
inert
alkanes
using
chlorides
without
use
an
external
photocatalyst
was
studied,
achieving
successful
C(sp
Advanced Synthesis & Catalysis,
Год журнала:
2024,
Номер
366(13), С. 2898 - 2918
Опубликована: Май 18, 2024
Abstract
Converting
any
desired
C−H
bond
to
the
intended
C−Z
in
a
given
organic
molecule
could
be
final
peak
of
functionalization
methodology.
Among
three
types
bonds,
ubiquitous
C(
sp
3
)−H
has
gained
particular
attention,
especially
last
two
decades.
There
are
different
ways
transform
bonds
into
bonds.
The
use
chlorine
radicals
is
one
these
methods
with
promising
future.
literature
review
shows
that
sources
have
been
used
for
chlorine,
including
chloride
ions
(HCl
or
salts),
coordinated
chlorides
(transition
metal
complexes),
and
(organochlorine
compounds).
However,
HCl
FeCl
most
attention
among
sources.
major
convert
from
radicals:
1)
oxidation
hydrogen
salts,
2)
photolysis
chloride,
3)
transition
insertion
C−Cl
This
summarizes
published
research
papers
on
functionalization.
Therefore,
chlorination
reactions
which
do
not
play
direct
role
cleavage
within
scope
this
review.
Synthesis,
Год журнала:
2023,
Номер
56(13), С. 1967 - 1978
Опубликована: Ноя. 21, 2023
Abstract
The
absorption
of
light
by
photosensitizers
has
been
shown
to
offer
novel
reactive
pathways
through
electronic
excited
state
intermediates,
complementing
ground-state
mechanisms.
Such
strategies
have
applied
in
both
photocatalysis
and
photoredox
catalysis,
driven
generating
intermediates
from
their
long-lived
states.
One
developing
area
is
photoinduced
ligand-to-metal
charge
transfer
(LMCT)
which
coordination
a
ligand
metal
center
subsequent
excitation
with
results
the
formation
radical
reduced
center.
This
mini
review
concerns
foundations
recent
developments
on
transition-metal
focusing
organic
transformations
made
possible
this
mechanism.
1
Introduction
2
Iron
3
Cobalt
4
Nickel
5
Copper
6
Future
Outlook
Conclusion
Organic Letters,
Год журнала:
2023,
Номер
25(20), С. 3687 - 3692
Опубликована: Май 12, 2023
A
unique
transition-metal-free
radical
thiolation
of
2-azaallyl
anions
has
been
developed.
Easily
accessible
thiosulfonates
and
2-azaallyls
undergo
the
tandem
process
single-electron
transfer
radical-radical
coupling
to
construct
C(sp3)-S
bonds.
This
robust
protocol
enables
a
mild
chemoselective
between
access
α-amino
sulfides
in
50-92%
yields
(25
examples).
The
scalability
this
was
demonstrated
by
telescopic
gram-scale
experiments.
Mechanistic
studies
provide
significant
evidence
for
reaction.
