Organic Chemistry Frontiers,
Journal Year:
2021,
Volume and Issue:
8(19), P. 5316 - 5321
Published: Jan. 1, 2021
A
photoredox-catalyzed
three-component
radical
cascade
reaction
of
β,γ-unsaturated
oximes/hydrazones,
the
sulfur
dioxide
surrogate
DABCO·(SO
2
)
and
alkenes
under
mild
conditions
is
developed.
Organic Chemistry Frontiers,
Journal Year:
2022,
Volume and Issue:
9(7), P. 1937 - 1942
Published: Jan. 1, 2022
An
iron-catalyzed
dearomative
spirocyclization
of
biaryl
ynones
with
sodium
metabisulfite
and
cycloketone
oxime
esters
is
developed
for
the
construction
sulfonated
spiro[5,5]trienones.
The Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
88(11), P. 7245 - 7255
Published: May 23, 2023
A
cascade
selenylation/cyclization
of
dienes
with
diselenides
has
been
realized
under
visible-light
irradiation
or
electrolysis
conditions.
Employing
O2
electricity
as
a
"green"
oxidant,
this
protocol
provides
green
and
efficient
method
for
an
array
biologically
important
seleno-benzo[b]azepine
derivatives
in
moderate
to
good
yields.
The
direct
sunlight
gram-scale
reaction
render
the
approach
practical
attractive.
Organic Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
10(5), P. 1224 - 1229
Published: Jan. 1, 2023
Brønsted
base
catalyzed
thiosulfonylation
and
trifluoromethylthiosulfonylation
of
ynones
produced
thio-functionalized
vinyl
sulfones
in
high
yields
with
excellent
E
-selectivity.
Organic Chemistry Frontiers,
Journal Year:
2021,
Volume and Issue:
8(19), P. 5403 - 5409
Published: Jan. 1, 2021
A
visible-light
photoredox-catalyzed
four
component
reaction
of
quinoxalin-2(1
H
)-ones,
alkenes,
aryldiazonium,
and
sodium
metabisulfite
leading
to
sulfone-containing
)-ones
has
been
developed.
Organic Chemistry Frontiers,
Journal Year:
2021,
Volume and Issue:
8(14), P. 3746 - 3751
Published: Jan. 1, 2021
A
photoredox-catalyzed
reaction
of
oximes,
rongalite
and
electrophiles
is
accomplished,
affording
pyrrole-substituted
aliphatic
sulfones
or
sulfonamides
in
moderate
to
good
yields.
Organic Letters,
Journal Year:
2021,
Volume and Issue:
23(23), P. 9303 - 9308
Published: Nov. 22, 2021
A
simple
and
mild
photoredox
catalytic
approach
to
access
difluoroalkylated
dioxodibenzothiazepines
in
high
regioselectivity
via
radical
cascade
cyclization
has
been
described
herein.
In
contrast
previous
methods,
this
strategy
does
not
involve
the
use
of
transition-metal
catalysts
avoids
potential
disadvantages
inevitable
toxicity
tedious
removal
process
metal
catalysts.
The
commercially
available
inexpensive
CF2
precursors,
wide
substrate
scope,
reaction
conditions
demonstrate
practicability
approach.
Organic Chemistry Frontiers,
Journal Year:
2022,
Volume and Issue:
9(13), P. 3521 - 3526
Published: Jan. 1, 2022
Access
to
sulfonylated
indolo[2,1-
a
]isoquinolines
through
an
efficient
three-component
reaction
of
2-aryl-
N
-acryloyl
indoles,
sulfur
dioxide
and
aryldiazonium
tetrafluoroborates
is
developed.
Organic Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
10(8), P. 1968 - 1974
Published: Jan. 1, 2023
A
general
and
efficient
photochemical
strategy
for
difluoromethylation/radical
cascade
cyclization
of
alkynes
with
sodium
difluoromethylsulfinate
(NaSO
2
CF
H)
has
been
disclosed.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
89(7), P. 4877 - 4887
Published: March 8, 2024
General
and
convenient
visible-light-promoted
alkylsulfonylation
cyanoalkylsulfonylation
of
MBH
adducts
have
been
developed
through
the
multicomponent
insertion
sulfur
dioxide,
enabling
assembly
two
C–S
bonds
to
generate
structurally
diverse
allylic
alkylsulfones
(43
examples
in
total).
The
reaction
with
potassium
alkyltrifluoroborates
1,4-diazabicyclo[2.2.2]octane
bis(sulfur
dioxide)
adduct
afforded
sulfones
generally
good
yields.
Notably,
addition
N,N,N′,N′-tetramethylethylenediamine
as
a
base
into
photocatalytic
system
led
yielding
an
alkyl
sulfonyl
unit
cyano
group-anchored
trisubstituted
alkenes
by
utilizing
cycloketone
oxime
esters
C-radical
precursors.
Both
these
reactions
constructed
bonds,
all
desired
products
were
obtained
moderate
excellent
yields
complete
stereospecificity.