Advanced Synthesis & Catalysis,
Journal Year:
2019,
Volume and Issue:
361(23), P. 5490 - 5498
Published: Sept. 16, 2019
Abstract
An
efficient
approach
using
a
photocatalytic
strategy
for
C−H
perfluoroalkylation
of
quinoxalinones
under
aerobic
oxidation
condition
has
been
developed.
Such
transformation
employs
readily
available
sodium
perfluoroalkanesulfinates
as
reagents
and
demonstrates
good
functional
group
compatibility,
affording
corresponding
products
in
moderate
to
yields.
Compared
with
previous
procedures,
this
protocol
uses
oxygen
oxidant,
avoids
the
use
external
additive.
A
radical
mechanism
is
involved
reaction.
magnified
image
Chemical Reviews,
Journal Year:
2021,
Volume and Issue:
122(2), P. 1925 - 2016
Published: Sept. 29, 2021
The
fields
of
C–H
functionalization
and
photoredox
catalysis
have
garnered
enormous
interest
utility
in
the
past
several
decades.
Many
different
scientific
disciplines
relied
on
strategies
including
natural
product
synthesis,
drug
discovery,
radiolabeling,
bioconjugation,
materials,
fine
chemical
synthesis.
In
this
Review,
we
highlight
use
reactions.
We
separate
review
into
inorganic/organometallic
catalysts
organic-based
catalytic
systems.
Further
subdivision
by
reaction
class─either
sp2
or
sp3
functionalization─lends
perspective
tactical
for
these
methods
synthetic
applications.
Chemical Reviews,
Journal Year:
2021,
Volume and Issue:
122(2), P. 2017 - 2291
Published: Nov. 23, 2021
We
present
here
a
review
of
the
photochemical
and
electrochemical
applications
multi-site
proton-coupled
electron
transfer
(MS-PCET)
in
organic
synthesis.
MS-PCETs
are
redox
mechanisms
which
both
an
proton
exchanged
together,
often
concerted
elementary
step.
As
such,
MS-PCET
can
function
as
non-classical
mechanism
for
homolytic
bond
activation,
providing
opportunities
to
generate
synthetically
useful
free
radical
intermediates
directly
from
wide
variety
common
functional
groups.
introduction
practitioner’s
guide
reaction
design,
with
emphasis
on
unique
energetic
selectivity
features
that
characteristic
this
class.
then
chapters
oxidative
N–H,
O–H,
S–H,
C–H
homolysis
methods,
generation
corresponding
neutral
species.
Then,
reductive
PCET
activations
involving
carbonyl,
imine,
other
X═Y
π-systems,
heteroarenes,
where
ketyl,
α-amino,
heteroarene-derived
radicals
be
generated.
Finally,
we
asymmetric
catalysis
materials
device
applications.
Within
each
chapter,
subdivide
by
group
undergoing
homolysis,
thereafter
type
transformation
being
promoted.
Methods
published
prior
end
December
2020
presented.
Chemical Reviews,
Journal Year:
2021,
Volume and Issue:
122(2), P. 2353 - 2428
Published: Oct. 8, 2021
For
more
than
70
years,
nitrogen-centered
radicals
have
been
recognized
as
potent
synthetic
intermediates.
This
review
is
a
survey
designed
for
use
by
chemists
engaged
in
target-oriented
synthesis.
summarizes
the
recent
paradigm
shift
access
to
and
application
of
N-centered
enabled
visible-light
photocatalysis.
broadens
streamlines
approaches
many
small
molecules
because
photocatalysis
conditions
are
mild.
Explicit
attention
paid
innovative
advances
N–X
bonds
radical
precursors,
where
X
=
Cl,
N,
S,
O,
H.
clarity,
key
mechanistic
data
noted,
available.
Synthetic
applications
limitations
summarized
illuminate
tremendous
utility
photocatalytically
generated
radicals.
Organic & Biomolecular Chemistry,
Journal Year:
2019,
Volume and Issue:
17(24), P. 5863 - 5881
Published: Jan. 1, 2019
The
direct
C3-functionalization
of
quinoxalin-2(1H)-ones
via
C–H
bond
activation
has
recently
attracted
considerable
attention,
due
to
their
diverse
biological
activities
and
chemical
properties.
Green Chemistry,
Journal Year:
2020,
Volume and Issue:
22(5), P. 1720 - 1725
Published: Jan. 1, 2020
An
eco-friendly
visible-light-induced
decarboxylative
acylation
of
quinoxalin-2(1H)-ones
and
α-oxo
carboxylic
acids
with
air
as
the
oxidant
under
external-photocatalyst-free
conditions
was
established.
Green Chemistry,
Journal Year:
2020,
Volume and Issue:
23(1), P. 232 - 248
Published: Dec. 11, 2020
Water
is
a
green
reaction
medium,
while
visible
light
represents
renewable,
clean,
and
abundant
energy
source.
The
recent
advances
in
visible-light-mediated
organic
transformations
water
are
summarized.
Green Chemistry,
Journal Year:
2019,
Volume and Issue:
21(7), P. 1609 - 1613
Published: Jan. 1, 2019
A
facile
visible-light-driven
method
has
been
developed
to
construct
sulfoxides
from
aryldiazo
sulfones
and
thiols
in
air
under
photocatalyst-free
conditions.
