Recent advances on electrochemical generation of sulfonyl radical triggered cyclization of alkene/alkynes
Jiaqing Shao,
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Jiang Liu,
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Haibo Mei
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et al.
Tetrahedron,
Journal Year:
2025,
Volume and Issue:
173, P. 134467 - 134467
Published: Jan. 12, 2025
Language: Английский
Electrochemical synthesis of γ-carbolinones via sulfonylation-triggered cyclization of indole-3-carboxamides
Dan Luo,
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Qian Wang,
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Jiang Liu
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et al.
Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
A
novel
electrochemical
cyclization
reaction
of
N
-acryloyl-indole-3-carboxamides
has
been
developed,
which
provides
a
new
and
efficient
strategy
for
the
synthesis
γ-carbolinone
derivatives.
Language: Английский
Organophotocatalytic Regioselective Silylation/Germylation and Cascade Cyclization of N-Alkenyl α-CF3 Acrylamides: Access to Densely Functionalized 4-Pyrrolin-2-ones
Organic Letters,
Journal Year:
2024,
Volume and Issue:
26(43), P. 9269 - 9275
Published: Oct. 21, 2024
We
report
an
organophotoredox-catalyzed
silylation/germylation
cascade
cyclization
of
Language: Английский
DABCO‐Mediated Photoelectrochemical Three‐Component Sulfonocyclization of 3‐Aza‐1,5‐dienes
Lu-Cai Ding,
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Gui-Hong Yang,
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Li Luo
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et al.
Chinese Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 2, 2024
Comprehensive
Summary
Herein,
we
report
a
rare
example
of
three‐component
net‐oxidative
sulfonylation
SO
2
surrogate
with
an
oxidatively
activated
radical
precursor
under
mild
and
metal‐
external‐oxidant‐free
conditions.
The
mildness
sustainability
the
reaction
are
enabled
by
photoelectrocatalysis,
3‐aza‐1,5‐dienes,
organotrifluoroborates
1,4‐diazabicyclo[2.2.2]octane
bis(sulfur
dioxide)
adduct
(DABSO)
undergo
sulfonylative
cyclization
to
afford
sulfono
4‐pyrrolin‐2‐ones
in
atom‐economical
manner
broad
substrate
scope
good
functional‐group
tolerance.
protocol
is
amenable
late‐stage
diversification
complex
molecular
architectures
as
well
gram‐scale
synthesis.
Sunlight
could
be
used
light
source,
conducted
all‐solar
mode
using
commercially
available
photovoltaic
panel
generate
electricity
situ
.
Mechanistic
studies
reveal
that
generated
(DABCO),
which
was
generally
innocent
previous
reactions,
functions
electron
shuttle
between
photocatalytic
cycle
reactants.
Language: Английский
Electrophotocatalytic Thiocyanation and Sulfonylation Cyclization of Unactivated Alkenes
Yingchun Ma,
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Ping Yu,
No information about this author
Ruoyu Qin
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et al.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 18, 2024
We
report
an
electrophotocatalytic
process
that
enables
the
thiocyanation
and
sulfonylation/cyclization
of
alkenes.
It
is
applicable
to
a
wide
range
unactivated
alkenes,
using
inexpensive
photocatalyst
2,4,6-triphenylpyrylium
tetrafluoroborate
(TPPT)
produce
diverse
array
heterocycles
containing
sulfonyl
thiocyano
groups
with
good
functional
group
tolerance.
The
protocol
operates
under
mild,
chemical
oxidant-
transition-metal-free,
broad
scope
substrates.
Preliminary
mechanistic
studies
suggest
reaction
involves
combination
electrolysis
reductive
quenching
photocatalytic
cycle
TPPT.
Language: Английский
Electrochemical domino sulfonylation/dearomative ipso‐annulation of 2‐alkynyl biaryls to access spiro(indenyl)cyclohexadienones
Chada Raji Reddy,
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Karna Nair,
No information about this author
Puthiya Purayil Vinaya
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et al.
European Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 2, 2024
Abstract
Herein,
we
present
an
efficient
strategy
for
the
synthesis
of
spiro(indenyl)cyclohexadienones
through
radical‐promoted
reaction
2‐alkynyl
biaryls
with
sodium
sulfinates
under
electrochemical
conditions.
The
involves
sulfonylation
and
dearomative
ipso‐
cyclisation
in
a
domino
fashion.
This
approach
features
use
readily
accessible
precursors,
wide
functional
group
tolerance
external
oxidant‐free
practicality
method
was
also
illustrated
by
scale‐up
further
diversification
product.
Language: Английский
Sulfonylation/cyclization of alkynes with sulfonyl chlorides by copper catalysis
New Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
48(47), P. 19746 - 19749
Published: Jan. 1, 2024
A
gentle
and
remarkably
effective
copper-catalyzed
method
for
the
cascade
sulfonylation
of
alkynes
using
sulfonyl
chlordies
as
direct
sulfonylating
reagents,
is
presented.
Language: Английский
Exploring nickel-catalyzed organochalcogen synthesis via cross-coupling of benzonitrile and alkyl chalcogenols with computational tools
Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 30, 2024
The
reaction
mechanism
of
Ni(0)-catalyzed
C–S
cross-coupling
between
benzonitrile
and
propanethiol
has
been
studied
with
DFT
validated
by
microkinetic
modeling.
protocol
is
used
to
assess
its
potential
usage
for
building
C–Se
C–Te
bonds.
Language: Английский