Paired Electrolysis-Enabled Arylation of Quinoxalin-2(1H)-ones
Jia-Cheng Hou,
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Jun Jiang,
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Yan-Cui Wen
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et al.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
89(9), P. 6117 - 6125
Published: April 24, 2024
The
first
paired
electrolysis-enabled
arylation
of
quinoxalin-2(1H)-ones
was
achieved
using
cyanoarenes
as
the
reagents.
A
variety
3-arylquinoxalin-2(1H)-ones
with
various
important
functional
groups
were
obtained
in
moderate
to
good
yields
under
metal-
and
chemical
oxidant-free
conditions.
With
a
pair
reductive
oxidative
processes
occurring
among
substrates
reaction
intermediates,
power
consumption
can
be
dramatically
reduced.
Language: Английский
Multicomponent Heteroarylphosphorothiolation of Alkenes for Accessing β‐Phosphorothiolated Quinoxalinones
Sha Peng,
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Lihua Yang,
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Xiang-Qin Xu
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et al.
Advanced Synthesis & Catalysis,
Journal Year:
2024,
Volume and Issue:
366(12), P. 2758 - 2763
Published: April 24, 2024
Abstract
Herein,
we
present
a
(NH
4
)
2
S
O
8
mediated
difunctionalization
reaction
of
aryl
alkenes
with
quinoxalinones
and
P(O)SH
compounds.
This
method
enables
the
synthesis
various
phosphorothioate‐containing
quinoxalin‐2(1
H
)‐one
derivatives
(46
examples)
in
37–79%
yields.
The
is
compatible
range
functional
groups
easily
adaptable
to
large‐scale
synthesis.
Preliminary
studies
suggest
involvement
phosphorothioate
radicals
these
transformations.
Language: Английский
Visible-Light Photoredox-Catalyzed Difunctionalization of Alkynes with Quinoxalin-2(1H)-Ones, P4S10, and Alcohols
Lianhui Song,
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Chao Ma,
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Jian Huang
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et al.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
89(15), P. 10974 - 10986
Published: July 24, 2024
Visible-light
photoredox-catalyzed
method
has
been
developed
for
the
synthesis
of
quinoxalin-2(1H)-one-containing
vinyl
phosphorodithioates
via
direct
difunctionalization
alkynes
with
quinoxalin-2(1H)-ones,
P4S10
and
alcohols.
This
four-component
reaction
could
be
carried
out
under
metal-free
mild
conditions,
affording
a
number
in
moderate
to
good
yields
Z-isomers
as
major
products.
Photocatalytic
radical
mechanism
is
proposed
based
on
results
trapping
fluorescence
quenching
experiments.
Language: Английский
K2S2O8‐Mediated Access to Alkylsulfonated Spiro[4,5] Trienones from N‐Arylpropiolamides with the Insertion of Sulfur Dioxide
Xin‐Qian Liu,
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Peng‐Fei Huang,
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Biquan Xiong
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et al.
Advanced Synthesis & Catalysis,
Journal Year:
2023,
Volume and Issue:
366(3), P. 488 - 493
Published: Dec. 23, 2023
Abstract
A
four‐component
reaction
of
N
‐arylpropiolamides,
Hantzsch
esters,
Na
2
S
O
5
and
water
via
a
radical
cascade
cyclization
process
with
the
insertion
sulfur
dioxide
mediated
by
K
8
is
reported.
series
alkylsulfonated
spiro[4,5]
trienones
are
prepared
up
to
86%
yield
good
functional
group
tolerance
substrate
applicability.
Preliminary
mechanism
experiments
indicate
that
carbonyl
oxygen
originated
from
water.
Language: Английский
Efficient synthesis of SCF3-containing 3-alkenylquinoxalinones via three-component radical cascade reaction
Siyu Wang,
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Chu L,
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Wei Yang
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et al.
Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
22(18), P. 3740 - 3745
Published: Jan. 1, 2024
An
efficient
and
practical
method
for
the
synthesis
of
3-alkenylquinoxalinones
containing
SCF
Language: Английский
Electrochemical Trifluoromethylthiolation/Cyclization of N-Arylacrylamides with AgSCF3: Access to SCF3-Containing Oxindoles
Yu Wang,
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Ye Wang,
No information about this author
Sheng Wang
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et al.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
89(17), P. 11950 - 11958
Published: Aug. 19, 2024
An
environmentally
friendly
electrochemical
strategy
for
the
synthesis
of
SCF3-containing
oxindoles
was
developed.
This
transformation
accomplished
through
a
cascade
trifluoromethylthiolation/cyclization
N-acrylamides
with
AgSCF3,
obviating
requirement
external
oxidants.
A
variety
functional
groups
were
well
tolerated
in
this
transformation.
Language: Английский
Photocatalytic difunctionalization of alkenes with quinoxalinones and dialkyl dithiophosphoric acids
Zhen Wang
No information about this author
Organic & Biomolecular Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
The
photoredox
eosin
Y-catalyzed
difunctionalization
of
alkenes
with
quinoxalinones
and
dialkyl
dithiophosphoric
acids
was
realized.
This
reaction
exhibited
excellent
functional
group
compatibility.
Language: Английский