Photoredox streamlines electrocatalysis: photoelectrosynthesis of polycyclic pyrimidin-4-ones through carbocyclization of unactivated alkenes with malonates
Minglin Tao,
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Feng Qin,
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Kaixing Gong
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et al.
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(7), P. 4199 - 4208
Published: Jan. 1, 2024
A
new
photoelectrocatalytic
mode
permits
the
synthesis
of
polycyclic
pyrimidin-4-ones
through
dehydrogenative
cyclization
malonates
with
unactivated
alkenes.
Language: Английский
Self‐ or Acridinium‐Catalyzed Electrophotosynthesis of Thiocyanato Heterocycles from Activated Alkenes
Kaixing Gong,
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Yingchun Ma,
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Ping Yu
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et al.
Advanced Synthesis & Catalysis,
Journal Year:
2024,
Volume and Issue:
366(10), P. 2352 - 2362
Published: April 5, 2024
Abstract
While
the
emergence
of
electrophotochemistry
provides
opportunities,
such
a
chemistry
at
this
stage
suffers
from
limited
reaction
types
and
high
photocatalyst
loadings.
A
self‐catalyzed
electrophotosynthesis
as
well
one
with
low
loading
is
presented.
These
external‐oxidant‐free
cyclizations
are
enabling
applicable
to
range
activated
alkenes,
affording
diverse
array
thiocyanato
heterocycles
including
4‐pyrrolin‐2‐ones,
isoquinoline‐1,3‐diones,
indolo[2,1‐
]isoquinolin‐6(5
H
)‐ones,
benzoimidazo[2,1‐
)‐ones
indolin‐2‐ones,
protocols
amenable
late‐stage
diversification
complex
molecular
architectures
gram‐scale
syntheses.
Sunlight
could
serve
light
source,
be
conducted
in
an
all‐solar‐driven
mode
using
commercially
available
photovoltaic
panel
produce
electricity.
Language: Английский
Electrochemical Sulfonylation/Cyclization of N-Alkenylacrylamides with Sodium Sulfinates or Sulfonyl Hydrazides
Zhixian Yang,
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Lu-Cai Ding,
No information about this author
Gui-Hong Yang
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et al.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
89(15), P. 10660 - 10677
Published: July 18, 2024
Two
general
protocols
for
the
regioselective
electrochemically
enabled
sulfonylation
cyclization
of
Language: Английский
Electrophotocatalysis Versus Indirect Electrolysis: Electrochemical Selenocyclization of 3‐Aza‐1,5‐dienes Facilitated by Energy Transfer, Direct Photolysis or N‐Hydroxyphthalimide
Dongyin Wang,
No information about this author
Li Zeng,
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Jifu Shi
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et al.
Chemistry - A European Journal,
Journal Year:
2024,
Volume and Issue:
30(36)
Published: April 23, 2024
Three
hybrid
electrochemical
protocols,
which
involve
the
energy
transfer,
direct
photolysis
and
N-hydroxyphthalimide
catalyst,
respectively,
are
presented
for
selenylation/cyclization
of
fragile
substrates
3-aza-1,5-dienes
with
diorganyl
diselenides
to
afford
3-selenomethyl-4-pyrrolin-2-ones.
The
two
electrophotocatalytic
reactions
indirect
electrolysis
one
both
regioselective
external-oxidant-
transition-metal-free,
associated
a
broad
substrate
scope
high
Se-economy,
all
three
methods
amenable
gram-scale
syntheses,
late-stage
functionalizations,
sunlight-induced
experiments
all-solar-driven
syntheses.
Language: Английский
DABCO‐Mediated Photoelectrochemical Three‐Component Sulfonocyclization of 3‐Aza‐1,5‐dienes
Lu-Cai Ding,
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Gui-Hong Yang,
No information about this author
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
Photoredox-catalyzed S-alkenylation of benzenethiols with alkenyl halides
Sodai Nishino,
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Takuya Kurahashi
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Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
53(10)
Published: Oct. 1, 2024
Abstract
Vinyl
sulfides
are
important
structural
motifs
that
allow
various
organic
compounds.
Herein,
we
report
the
facile
synthesis
of
vinyl
through
photoredox-catalyzed
coupling
reaction
alkenyl
halides
with
benzenethiols.
The
can
proceed
without
use
transition
metal
catalysts.
Language: Английский