The Journal of Organic Chemistry,
Год журнала:
2022,
Номер
87(22), С. 15421 - 15434
Опубликована: Ноя. 2, 2022
A
direct
functionalization
of
numerous
1,4-quinones
with
various
aryl
boronic
acids
is
reported
under
blue
light-emitting
diodes
(LEDs).
This
reaction
occurs
at
room
temperature
in
an
open
flask
without
any
catalysts,
base,
and
oxidants
acetonitrile
(ACN)
scalable
grams.
With
diverse
like
1,4-benzo-,
naphtho-,
anthra-,
4-bromonaphthoquinones
as
substrates,
facile
cross
coupling
reactions
occur
alkyl
assistance
from
photocatalysts.
2-Alkylated
cyclohexene-1,4-diones
were
obtained
when
the
reacted
standard
conditions.
However,
slight
warming
mixture
afforded
desired
alkylated
1,4-quinones.
The
believed
to
proceed
through
LED-induced
radical
formation
rings
assisted
by
Advanced Synthesis & Catalysis,
Год журнала:
2022,
Номер
364(10), С. 1643 - 1665
Опубликована: Апрель 25, 2022
Abstract
The
chemistry
of
boron
compounds
has
been
profoundly
investigated
in
the
last
decades,
leading
to
ubiquity
many
synthetic
applications
as
well
biologically
active
molecules.
Since
advent
photoredox
catalysis,
an
upsurge
discovery
suitable
radical
precursors
witnessed,
and
is
becoming
a
protagonist
this
field.
Despite
studies
focused
on
trifluoroborates,
use
boronic
acids
esters
have
received
much
less
attention
regard.
Because
their
high
oxidation
potential,
development
methods
enable
involvement
photocatalyzed
reactions
only
recent.
Nonetheless,
review
summarizes
novel
strategies
developed
unlock
role
photochemical
discloses
potential
that
own,
when
intrinsic
chemical
properties
are
exploited.
magnified
image
European Journal of Organic Chemistry,
Год журнала:
2023,
Номер
unknown
Опубликована: Сен. 11, 2023
Abstract
The
multicomponent
reactions
of
quinoxalin‐2(1
H
)‐ones
has
attracted
considerable
interest
due
to
their
significant
biological
and
chemical
activities.
very
recent
advances
(from
2021
the
beginning
2023)
on
radical
three‐component
cascade
reaction
)‐one
derivatives
at
C3
position
were
summarized
in
this
mini‐review.
According
kind
types
involved,
some
representative
examples
detailed
mechanism
have
been
categorized
discussed.
red
front
was
covered
by
Figure
1.
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(8), С. 5371 - 5381
Опубликована: Март 29, 2024
A
facile
and
eco-friendly
photoinduced
dehydrogenative
amination
of
quinoxalin-2(1H)-ones
with
aliphatic
amines
without
any
metal,
strong
oxidant,
photocatalyst
has
been
established
for
the
first
time.
This
reaction
proceeding
efficiently
air
as
sole
oxidant
at
room
temperature
obtains
a
wide
range
3-aminoquinoxaline-2(1H)-ones
in
high
yields
excellent
functional
group
tolerance.
The
mechanistic
studies
show
an
interesting
involvement
photosensitizer,
which
eliminates
requirement
external
photocatalysts.
Organic Chemistry Frontiers,
Год журнала:
2022,
Номер
9(13), С. 3506 - 3514
Опубликована: Янв. 1, 2022
The
visible
light-induced
oxidative
radical
cascade
coupling
of
N
-arylacrylamides
with
aldehydes
using
bromide
as
the
hydrogen
atom
transfer
agent
to
synthesize
functional
oxindoles
is
described.
