Asian Journal of Organic Chemistry,
Год журнала:
2019,
Номер
8(6), С. 893 - 898
Опубликована: Март 19, 2019
Abstract
Diverse
allylic
sulfones
are
generated
through
a
three‐component
reaction
of
potassium
alkyltrifluoroborates,
sulfur
dioxide
and
bromides
in
the
presence
9‐mesityl‐10‐methyl
acridinium
perchlorate
under
visible
light
irradiation
at
room
temperature.
This
transformation
proceeds
efficiently,
broad
scope
is
demonstrated
with
good
functional
groups
tolerance.
initiated
by
treatment
alkyltrifluoroborate
visible‐light
photocatalyst,
leading
to
alkyl
radical.
radical
intermediate
trapped
provide
alkylsulfonyl
radical,
which
then
undergoes
further
afford
corresponding
sulfone.
Organic & Biomolecular Chemistry,
Год журнала:
2022,
Номер
20(33), С. 6508 - 6527
Опубликована: Янв. 1, 2022
Thiocyanation
can
introduce
SCN
groups
into
parent
molecules
for
constructing
SCN-containing
small
organic
molecules.
In
this
review,
we
summarize
the
research
progress
of
direct
thiocyanation
in
recent
years.
Organic Chemistry Frontiers,
Год журнала:
2019,
Номер
6(11), С. 1863 - 1867
Опубликована: Янв. 1, 2019
A
photoinduced
synthesis
of
S-aryl
thiosulfonates
through
a
three-component
reaction
aryldiazonium
tetrafluoroborates,
sodium
metabisulfite,
and
thiourea
is
achieved.
In
this
transformation,
radical
coupling
pathway
proposed.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2019,
Номер
7(4), С. 3727 - 3732
Опубликована: Янв. 29, 2019
The
ionic
liquid
[HMTH]2H2[SiW12O40]
was
prepared
from
the
inexpensive,
nontoxic
vitamin
B1-like
compound,
i.e.,
5-(2-hydroxyethyl)-4-methylthiazole
(HMT),
and
noncorrosive
heteropolyacid
(H4SiW12O40).
This
acidic
found
to
be
an
efficient
heterogeneous
catalyst
for
direct
dehydrative
coupling
of
alcohols
with
(or
alkenes)
synthesize
various
polysubstituted
olefins
in
good
excellent
yields
dimethyl
carbonate
(DMC)
as
a
green
solvent.
Furthermore,
this
protocol
applicable
gram-scale
reaction,
could
used
at
least
8
runs
without
significant
loss
activity.
Advanced Synthesis & Catalysis,
Год журнала:
2019,
Номер
361(8), С. 1808 - 1814
Опубликована: Март 8, 2019
Abstract
A
simple
and
catalyst‐free
strategy
was
developed
for
the
synthesis
of
unsymmetrical
thiosulfonates
using
readily
available
DABCO⋅(SO
2
)
as
a
solid
bench‐stable
sulfur
dioxide
surrogate.
The
corresponding
were
obtained
through
radical
pathway
with
good
functional
group
tolerance.
This
offers
promising
method
construction
diverse
useful
in
field
synthetic
pharmaceutical
chemistry
extends
number
still
limited
fixation
strategies.
magnified
image
Organic Letters,
Год журнала:
2019,
Номер
21(8), С. 2800 - 2803
Опубликована: Апрель 10, 2019
A
simple
three-component
1,2-bromoesterification
of
alkenes
with
acids
and
N-bromosuccinimide
under
electrochemical
oxidative
conditions
is
described.
This
transformation
enables
the
construction
β-bromoalkyl
esters
via
C-Br/C-O
difunctionalization,
where
a
variety
alkenes,
including
styrenes
cycloolefins,
were
well
tolerated
to
react
efficiently
wide
range
acids,
such
as
aromatic
aliphatic
amino
acids.
Advanced Synthesis & Catalysis,
Год журнала:
2019,
Номер
361(22), С. 5182 - 5190
Опубликована: Сен. 26, 2019
Abstract
A
visible
light‐initiated
pseudo
four‐component
reaction
of
salicylaldehydes,
indole
and
malononitrile
in
aqueous
ethyl
lactate
is
described.
This
pot,
atomic
step
economic
(PASE)
methodology
provides
a
practical
approach
for
the
preparation
various
5‐substituted
chromeno[2,3‐
b
]pyridines
from
readily
available
starting
materials
at
ambient
temperature
without
any
catalyst.
High
yields
excellent
functional
groups
tolerance
are
observed.
magnified
image
Organic & Biomolecular Chemistry,
Год журнала:
2020,
Номер
18(8), С. 1504 - 1521
Опубликована: Янв. 1, 2020
Recent
advances
in
the
direct
β-C(sp2)–H
functionalization
of
enamides,
mainly
including
arylation,
alkenylation,
alkynylation,
alkylation,
acylation,
sulfonylation,
phosphorylation,
and
others,
are
reported.
Organic Letters,
Год журнала:
2019,
Номер
21(10), С. 3620 - 3624
Опубликована: Май 3, 2019
The
reaction
of
diorganyl
disulfides
or
diselenides
with
PhICl2
in
acetonitrile
was
found
for
the
first
time
to
lead
situ
formation
organosulfenyl
chloride
selenenyl
chloride,
which
enables
regioselective
intramolecular
chalcogenylacyloxylation
alkynes
resulting
4-chalcogenylisocumarins/pyrones
good
excellent
yields
under
metal-free
conditions.
Advanced Synthesis & Catalysis,
Год журнала:
2019,
Номер
361(16), С. 3712 - 3717
Опубликована: Июнь 5, 2019
Abstract
A
transition‐metal‐free
visible‐light‐promoted
radical
phosphorylation/cyclization
of
N
‐allylbenzamides
with
phosphine
oxides
for
the
synthesis
phosphoryl‐substituted
dihydroisoquinolones
was
developed
under
room
temperature.
This
protocol
features
mild
reaction
conditions,
simple
operation,
broad
substrate
scope
as
well
scale‐up
ability.
magnified
image
Organic Chemistry Frontiers,
Год журнала:
2019,
Номер
6(13), С. 2254 - 2259
Опубликована: Янв. 1, 2019
A
copper(ii)-catalyzed
aerobic
oxidative
reaction
of
arylhydrazines,
DABCO·(SO2)2
and
alkenes
is
reported.
Diverse
β-hydroxysulfones
are
generated
in
moderate
to
good
yields
through
the
hydroxysulfonylation
with
insertion
sulfur
dioxide
under
mild
conditions.
In
some
cases,
β-ketosulfones
produced.
