Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
22(16), P. 3204 - 3208
Published: Jan. 1, 2024
An
efficient
palladium-catalyzed
[2
+
2
1]
annulation
of
3-iodochromones,
bridged
olefins,
and
iodomethane
is
described,
affording
a
range
chromone-containing
polycyclic
compounds.
Additionally,
the
corresponding
deuterated
products
were
smoothly
obtained
with
iodomethane-
Advanced Synthesis & Catalysis,
Journal Year:
2023,
Volume and Issue:
366(3), P. 526 - 532
Published: Dec. 21, 2023
Abstract
An
electrochemical
methodology
for
the
construction
of
α
‐CF
3
‐substituted
carbonyl
compounds
in
moderate
to
good
yields
under
exogenous
metal
and
oxidant‐free
conditions
has
been
developed.
The
protocol
involves
single‐electron
oxidation
aryl
ring
generate
a
radical
cation
followed
by
three‐electron
S
N
2
reaction
resulting
formation
substituted
ketones.
Chemistry - A European Journal,
Journal Year:
2023,
Volume and Issue:
30(9)
Published: Nov. 22, 2023
Abstract
Developed
here
is
a
robust
electrochemical
cross‐coupling
reaction
between
aroyl
hydrazine
and
NH
‐sulfoximine
via
concomitant
cleavage
formation
of
C(sp
2
)−N
bonds
with
the
evolution
H
N
as
innocuous
by‐products.
This
sustainable
protocol
avoids
use
toxic
reagents
occurs
at
room
temperature.
The
proceeds
generation
an
sulfoximidoyl
radical
anodic
oxidation
under
constant
current
electrolysis
(CCE),
affording
‐aroylated
sulfoximine.
strategy
applied
to
late‐stage
sulfoximidation
L‐menthol,
(−)‐borneol,
D‐glucose,
vitamin‐E
derivatives,
marketed
drugs
such
probenecid,
ibuprofen,
flurbiprofen,
ciprofibrate,
sulindac.
In
addition,
present
methodology
mild,
high
functional
group
tolerance
broad
substrate
scope
scalable.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(34), P. 13576 - 13604
Published: Jan. 1, 2024
Three-membered
rings,
such
as
epoxides,
aziridines,
oxaziridines,
cyclopropenes,
vinyloxaziridines,
and
azirines,
are
recognized
crucial
pharmacophores
building
blocks
in
organic
chemistry
drug
discovery.
Despite
the
significant
advances
synthesis
of
these
rings
through
photo/electrochemical
methods
over
past
decade,
there
has
currently
been
no
focused
discussion
updated
overviews
on
this
topic.
Therefore,
we
presented
review
article
efficient
three-membered
using
photo-
electrochemical
strategies,
covering
literature
since
2015.
In
study,
a
conceptual
overview
detailed
discussions
were
provided
to
illustrate
advancement
field.
Moreover,
brief
outlines
current
challenges
opportunities
synthesizing
strategies.
ChemPhotoChem,
Journal Year:
2024,
Volume and Issue:
8(9)
Published: May 13, 2024
Abstract
The
development
of
greener
methods
for
the
preparation
three‐membered
rings
has
increased
in
last
decade,
not
only
due
to
their
biological
activity
but
also
ring
strain
those
heterocycles
that
make
them
useful
precursors
more
complex
molecules.
In
this
work,
visible‐light‐promoted
synthesis
and
ring‐opening
aziridines
epoxides,
reported
five
years,
were
reviewed.
Both
homogeneous
heterogeneous
catalysts
discussed
and,
addition,
plausible
mechanism
pathways
highlighted.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
This
highlight
summarises
electrochemical
approaches
for
the
deconstructive
functionalization
of
arylcycloalkanes
via
fragmentation
anodically
generated
aromatic
radical
cations.
An
external
oxidant
or
reductant,
acid-free
electrochemical
protocol
is
established
towards
the
hydrogenation
of
strained
rings
at
room
temperature
and
atmospheric
pressure.
After
control
experiments,
it
revealed
that
reaction
initiated
via
reduction
carbonyl
group.
The
methodology
highly
specific
has
a
broad
functional
group
tolerance.
Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
22(16), P. 3204 - 3208
Published: Jan. 1, 2024
An
efficient
palladium-catalyzed
[2
+
2
1]
annulation
of
3-iodochromones,
bridged
olefins,
and
iodomethane
is
described,
affording
a
range
chromone-containing
polycyclic
compounds.
Additionally,
the
corresponding
deuterated
products
were
smoothly
obtained
with
iodomethane-