Chemical Science,
Год журнала:
2024,
Номер
15(33), С. 13459 - 13465
Опубликована: Янв. 1, 2024
An
unprecedented
radical
smiles
rearrangement
of
N
-arylpropiolamides
was
realized
by
merging
electro-reduction
with
hydrogen
bonding
activation.
Enabled
this
dual
activation
strategy,
the
reduction
potential
shifted
positively
218
mV.
Chemical Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 26, 2024
Cross-electrophile
coupling
(XEC),
defined
by
us
as
the
cross-coupling
of
two
different
σ-electrophiles
that
is
driven
catalyst
reduction,
has
seen
rapid
progression
in
recent
years.
As
such,
this
review
aims
to
summarize
field
from
its
beginnings
up
until
mid-2023
and
provide
comprehensive
coverage
on
synthetic
methods
current
state
mechanistic
understanding.
Chapters
are
split
type
bond
formed,
which
include
C(sp
ACS Catalysis,
Год журнала:
2023,
Номер
13(10), С. 6773 - 6780
Опубликована: Май 3, 2023
An
efficient,
electrochemically
induced
cobalt-catalyzed
carbon–germanium
bond
formation
provides
access
to
a
variety
of
functionalized
germane-containing
compounds,
including
aryl,
vinyl,
and
alkyl
germanes.
The
germylation
is
conducted
under
mild
reaction
conditions
exhibits
broad
scope
functional
group
tolerance.
Mechanistic
experimental
studies
provide
insight
into
the
unexpected
pathway
sequential
activation
different
electrophiles.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(33)
Опубликована: Июнь 13, 2023
Abstract
The
difunctionalization
of
unsaturated
bonds
plays
a
vital
role
in
the
enrichment
molecular
complexity.
While
various
catalytic
methods
for
alkene
and
alkyne
have
been
developed
recent
years,
hetero‐functionalization
introduction
two
different
atoms
has
less
explored.
This
is
mainly
due
to
challenges
associated
with
achieving
high
chemo‐,
regio‐,
stereoselectivity,
especially
when
adding
similar
from
same
group
across
bonds.
In
this
study,
we
describe
nickel‐catalyzed,
three‐component
reductive
protocol
14
element
hetero‐difunctionalization
1,3‐enynes
using
electrochemistry.
new
method
mild,
selective,
general,
allowing
silyl‐,
germanyl‐,
stannyl‐alkylation
enynes.
Various
chlorosilanes
as
well
chlorogermans,
chlorostannanes
can
be
successfully
used
combination
aryl/alkyl‐substituted
primary,
secondary,
tertiary
alkyl
bromides
electroreductive
coupling.
Organic Letters,
Год журнала:
2023,
Номер
26(1), С. 411 - 415
Опубликована: Дек. 26, 2023
We
report
a
strategic
exploitation
of
trifluoromethyl
thianthrenium
triflate
(TT-CF3+OTf–)
as
both
electromediator
and
CF3
radical
precursors
for
paired
electrolysis.
Enabled
by
this
strategy,
the
three-component
trifluoromethylheteroaromatization
alkenes
alkynes
was
realized.
The
superiority
TT-CF3+OTf–
to
other
electrophilic
reagents
is
attributed
cathodic
generation
thianthrene
(TT)
mediator,
which
shifts
heterogeneous
oxidation
interest
homogeneous
one.
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(50), С. 23019 - 23029
Опубликована: Дек. 8, 2022
The
reaction
of
common
acyl-metal
species
(acyl
anion)
with
aldehydes
to
furnish
acyloins
has
received
much
less
attention
and
specifically
was
restricted
using
preformed
stoichiometric
reagents.
Moreover,
the
(catalytic)
enantioselective
variants
remain
unexplored,
asymmetric
synthesis
chiral
met
significant
challenges
in
organic
synthesis.
Here,
we
uncover
highly
coupling
acid
chlorides
α-bromobenzoates
by
nickel
catalysis
for
producing
enantioenriched
protected
α-hydroxy
ketones
(acyloins,
>60
examples)
high
enantioselectivities
(up
99%
ee).
successful
execution
this
protocol
enables
formation
a
key
ketyl
radical
from
α-bromoalkyl
benzoate
situ
generated
corresponding
aldehyde
acyl
bromide,
which
finally
is
captured
acyl-Ni
catalytically
formed
chlorides,
thus
avoiding
use
synthetic
utility
chemistry
demonstrated
downstream
elaboration
toward
diverse
set
synthetically
valuable
building
blocks
biologically
active
compounds.
ACS Catalysis,
Год журнала:
2023,
Номер
13(20), С. 13474 - 13483
Опубликована: Окт. 5, 2023
The
utilization
of
sulfinyl
sulfones
in
transition-metal-catalyzed
synthetic
chemistry
has
rarely
been
investigated.
Here
we
report
the
design
and
nickel-catalytic
conversion
situ-generated
redox-active
for
reductive
coupling
with
a
wide
variety
organic
halides
by
dual-role
nickel
catalyst
reductant
Zn.
Mechanistic
studies
disclose
that
key
such
reaction
is
employment
sulfones,
enabling
situ
generation
electrophilic
sulfur
reagents
through
zinc-induced
reduction
facilitated
catalyst.
This
strategy
demonstrates
good
tolerance
range
functional
groups.
Furthermore,
this
method
extends
to
meta-substituted
diaryl
sulfides,
modification
complex
bioactive
molecules
synthesis
thioether-containing
drugs.